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Parasitic Staphylinidae (Coleoptera) The front wings are without veins, hard or leathery, short, exzposing
much of abdomen (Fig.
49a-A). The first visible
abdominal sternite is not interrupted by hind coxal cavities. Outer lobe or galea of maxillae not a
segmented process. Maxillary palpi
are much shorter than antennae. Hind
tarsi with at least as many segments as front and middle tarsi. Two important genera are Aleochara and Anotylus. Key references
are Thompson (1944), Peschke & Fuldner (1977), Seevers (1978), Borror et al.
(1981), Peschke et al. (1987a), and Omar et al.
(1991a) 1.
Aleochara
spp. (Coleoptera:
Staphylinidae: Aleocharinae) (PHOTO) These parasitoids
are characterized by the forewings being developed into leathery shields
(elytra) under which the hind wings (the organs of flight) are folded when at
rest. The elytra are short, leaving
much of the abdomen exposed (Fig. 50a-A
& B). The abdomen is highly
flexible as in Aleochara taeniata Erichson (Fig. 50a-C). The genus Aleochara differs from other staphylinids in that the antennae
are inserted on the face between the anterior margins of the eyes, the tarsi
have 5 segments, the maxillary palpi have 5 segments and the labial palpi
have 4 segments. The two terminal
segments of the palpus are much narrower than the preceding with the last
segment minute. All species of this
genus in which life histories are known are solitary ectophagous parasitoids
on the pupae of muscoid flies within the puparium (Kemner 1926, Legner et al.
1976, Lesne & Mercier 1922, Jones (1967), Moore & Legner 1971, 1973,
1974a,b; 1975, White & Legner 1966).
Additional key
references are Coquillett (1891),
Wadsworth (1915), Scott (1920), Kemner (1926), Soring (1927), Zorin (1927),
Scheerpeltz (1933, 1934), Burks (1952), Read (1962), Fuldner (1963, 1964,
1968, 1971, 1973), Drea (1966), Horion (1967), Wingo et al. (1967), Allee
(1969), Adashkevich (1970), Adaskevich & Perekrest (1973, 1974), Hünten
(1971), Riegel (1971), Schneider (1971), Heller (1974, 1976), Heller &
Treece (1976), Lohse (1974), Pfenning (1975), Schulz (1975), Watts &
Combs (1975), Peschke & Fuldner (1977), Peschke & Metzler
(1987), Ienistea & Fabritius
(1978, 1982), Kirknel (1978), Peschke (1978a,b,c; 1983, 1985a,b; 1986, 1987),
Peschke et al. (1987b), Ursu & Sperantia (1978), Tawfik et al.
(1980), Hertveldt et al. (1984a,b), Klimaszewski (1984),
Klimaszewski & Blume (1986), Klimaszewski & Cervenka (1986), Hunter et al.
(1985), Samsoe-Peteresen (1985, 1987), Whistlecraft et al. (1985), Gordon
& Cornect (1986), Scott & Rutz (1988), and Wright & Müller (1989). Family Braconidae (Hymenoptera:
Ichneumonoidea) The fore wing
costal cell is absent. There is
either one recurrent vein (Fig. 45b-A) or none. Ventral abdominal segments are soft and
membranous, with a median fold.
Abdomen is not much elongated and the propodeum is not prolonged
beyond hind coxae. These parasitoids
are less than 12 mm long (Fig. 45b-B) Two important genera are Alysia and Phaenocarpa. Key
references are Marsh & Altson (1920), Lima (1960, 1962), Tobias (1962,
1963), Riek (1970), Prince (1976), Richards (1977), Borror et al.
(1981), Zhao (1984), Wharton (1976, 1986, 1987), Krombein et al.
(1979), Gauld & Bolton (1988), and Goulet & Huber (1993). 2. Alysia spp. (Hymenoptera: Braconidae) The parasitoids of
this genus are common in areas of moderate to high rainfall (Myers 1927,
1929; Laing 1937, Griffiths 1964, 1966; Fischer 1970, 1971; Wharton
1986). A common species in Europe, A. manducator
Panzer, was successfully established in Australia and New Zealand (Miller
1927, Newman 1928, Morgan 1929, Holdaway & Evans 1930, Holdaway &
Smith 1932.) The nearctic Alysia ridibunda Say has been found active on Calliphoridae (Lindquist
1932, 1940; Marsh 1968). Species of Alysia may be distinguished from those
of Aphaereta by their larger size
(ca. 2X as long), their shining black body color and the uneven thickness of
antennal funicular segments. They are
solitary endophagous larval parasitoids of muscoid flies. Additional key
references are Altson (1920), Caudri (1941), Likovský (1965, 1973), Burgess
& Wingo (1968), Vinogradova & Zinovjeva (1972), Zinovjeva (1976,
1978, 1981, 1985, 1987, 1988), Chernoguz (1984, 1986), Chernoguz & Reznik
(1987), Chernoz & Vaghina (1987), and Chernoguz et al. (1987). 3. Aphaereta spp. (Hymenoptera: Braconidae) These parasitoids
are found primarily in climates with substantial rainfall. Aphaereta
pallipes (Say) is most frequently
encountered in the Holarctic (McComb 1958, Salkeld 1959, House & Barlow 1961,
Griffiths 1964, 1966; Lange 1964, Lange & Bronskill 1964, Houser 1966,
Houser & Wingo 1967a, Marsh 1969, Fischer 1970, 1971; Garry & Wingo
1971, Figg et al 1983a,b, Whistlecraft et al. 1984, Rueda & Axtell
1985b). Aphaereta aotea Hughes
& Woolcock is found in Australia (Hughes & Woolcock 1976, 1978,
Hughes et al 1974). Species of Aphaereta may be readily distinguished
from those of Alysia by their
smaller size (ca. 1/2 as long), their reddish-brown body color and uniform
thickness of funicular antennal segments.
They are solitary endophagous larval parasitoids of muscoid
flies. Key references are Fischer
(1966), Zinovjeva (1974), and Gherasin & Lacatusu (1977). Family Ichneumonidae (Hymenoptera: Ichneumonoidea) Forewing venation
is complete, not reduced, with at least one complete cell present. Stigma and costal cell are absent. There are 2 recurrent veins usually
present (Fig. 45a-A & B). Ventral abdominal segments are soft and
membranous, with a median fold. Two
important genera are Phygadeuon and
Stilpnus. Key references are Thompson (1944), Salt (1952), Townes &
Townes (1966, 1973), Riek (1970) Richards (1977), Krombein et al.
(1979), Borror et al. (1981), Subba-Rao & Hayat
(1985), Pisicà & Fabritius (1986), Blanchot (1988, 1991a,b), Gauld &
Bolton (1988), Rollard (1988) and Goulet & Huber (1993). 4. Phygadeuon spp. (Hymenoptera: Ichneumonidae) This genus and Stilpnus can be distinguished from
other parasitoids noted herein by their complete wing venation. Both the fore wings and hind wings have
venation closed to form several cells (Fig. 46a-A). This genus is unique here in having
antennae of 22 segments with the first two segments short and the third
segment longer than the first two combined.
The antennae are inserted in the middle of the face between the
eyes. The species are solitary
internal larval parasitoids most often found in humid higher Holarctic
latitudes (Legner 1966, Legner & Olton 1968, Legner et al. 1976). Additional key references are Monteith
(1956), Horstmann (1967, 1972, 1975, 1986), Müller (1971), Frilli (1973),
Plattner (1975, 1979), Plattner & Naton (1975), and Naton (1983). 5. Stilpnus spp. (Hymenoptera: Ichneumonidae) The wing venation
is complete as in Phygadeuon, there
being complete cells in both the fore wings and hind wings. Antennae have 16 segments with the first
two segments short, the first being shorter than the next two together. The color is shining metallic black. They are solitary endophagous larval
parasitoids, apparently restricted to the genus Fannia in accumulated organic wastes (Legner & Olton 1971,
Legner et al. 1976, Loomis et al. 1968). They vary greatly in size with males being about 1/2 that of
females. A common species is S. anthomyiidiperda
(Viereck). Family Chalcididae (Hymenoptera: Chalcidoidea) Hind femora are
greatly enlarged, ventrally toothed (either a few large or many small teeth)
(Fig. 18a-A). The prepectus is
reduced or fused, not triangular (Fig. 18a-B). The frons is projected into 2 horns
(around antennae) when viewed dorsally.
They are solitary parasitoids which attack mature host larvae or young
pupae. Their general appearance is
shown in Fig. 18a-E. Two important genera are Brachymeria and Dirhinus. Key references
are Ashmead (1899), Schmiederknecht (1907, 1909), Froggatt (1916), Thompson
(1944), Schmitz (1946), Boucek (1956), Nikolskaya (1960), Riek (1970), Richards (1977), Krombein et al.
(1979), Subba-Rao & Hayat (1985), Fabritius & Andriescu (1987), Xue
(1988a), Xue et al. (1987c), Gauld & Bolton
(1988), and Goulet & Huber (1993). Genus Dirhinus Dalman, 1818
(Hymenoptera: Chalcididae) (Dirrhinus Dalman, 1923; Eniaca Kirby, 1883;
Dirrhinoidea
Girault, 1912; Pareniaca
Crawford, 1913; Eniacella
Girault, 1913; Eniacomorpha
Girault, 1915; Dirhinoides
Masi, 1947). Parasitoids in this
genus possess a pair of horns on the head which in some species bear a tooth
(Figs 42a-B & D). They have an elongated
body which is somwhat depressed dorsally (Fig. 42a-E). The mandibles are long and narrow, almost
straight. The genae are very large
and punctured. They parasitize
various brachycerous Diptera, seeking out full-grown larvae or pupae in the
soil. The key reference is Boucek
& Narendran (1981). 6. Dirhinus anthracia Walker, 1846
(Hymenoptera: Chalcididae) (Dirrhinus ruficornis Cameron, 1905; Eniacella
rufricornis Girault, 1913; Eniacella
bicornuticeps Girault, 1915; Dirhinus sarcophagae Froggatt, 1919; Dirhinus frequens Masi, 1933; Dirhinus intermedius Mani & Dubey,
1974). Female head densely
punctate, in dorsal view with eyes longer than temples, these converging,
slightly convex (Fig. 42a-A). Antennae of female reddish with yellow or
white hairs. Each horn has a deep
external apical notch with subparallel ridged (= carinate) sides, the inner
ridge being laminate but almost regular (Fig. 42a-B
& C). Horn in middle is usually distinctly
broader than the gap between antennal sockets, in dorsal view. The ocellar area is somewhat elevated; in
lateral view the head is less than 0.6 as wide as long, in dorsal outline
from the horn edge to occiput it is strongly convex. However, the vertex appears as almost one
plane. Length of gena (from eye to
submandibular corner) is obviously greater than the short diameter of
eye. Labrum bears scattered
hairs. Antennal scape is thickened
toward its base. Pronotum bears small
lateral patches of thicker hairs, and the punctuation in center is
dense. Abdominal petiole is
transverse, area of 4 dorsal ridges about 2X as broad as long, anteriorly
frequently margined. In male the
horns dorsally in middle are narrower than the gap. Size varies with host size.
The general appearance is as in Fig. 42a-D & E. There is a broad host range including
Muscidae, Sarcophagidae, Calliphoridae, Tephritidae and Tachinidae (Boucek
& Narendran (1981). Original
distribution India, Burma, Sri Lanka.
Additional key references are Walker (1846), Froggatt (1919, 1921),
Lever (1938), Masi (1947), Dresner (1954), Boucek (1956), and Mani et al.
(1974). 7. Dirhinus bakeri (Crawford, 1914)
(Hymenoptera: Chalcididae) (Pareniaca bakeri Crawford, 1914; Pareniaca
trichophthalma Masi, 1927). This is a small
species, 2.5-4.1 mm long, with antennae usually black, but at times with
pedicel and flagellar base in female reddish. Facial edge of each horn with a distinct additional tooth
(viewed laterally) (Fig. 40b-A & B). Tip of horn reaches much farther from eye
than frontal tooth (Fig. 40b-A). Fore and mid femorae and tibiae usually
are black, and wings usually whitish.
Abdominal petiole is rather closely joined with abdomen. Gena of both sexes is longer than the
maximum diameter of eye (Fig. 40b-A). Hosts include Musca domestica and
species of Stratiomyiidae and Tachinidae (Boucek & Narendran 1981). Original distribution India, Sri Lanka,
Malaysia, Philippines, Japan.
Additional key references are Masi (1947), Habu (1960), Baltazar
(1966), and Geetha-Bai & Sankaran (1977). 8. Dirhinus banksi Rohwer, 1923
(Hymenoptera: Chalcididae) Female body black including most of legs and
flagella. Scapes, pedicels, tarsi and
joints of legs are testaceous. Thorax
is much flattened dorsally, especially scutellum completely flat and with
broad smooth area separated by single row of punctuations from hind margin (Fig. 42b-A & B). Lateral head at least 1.5X as long as wide, with facial outline
convex, and receding near horn tips.
In dorsal view head width is ca. 1.67X the minimum distance between
eyes, horns appearing wide and nearly with parallel sides in basal half (Fig. 42b-C). Flagellum plus pedicel 1.6-1.7 X as long
as head is wide in lateral view, and clava a bit shorter than 3 preceding
segments combined. Pronotum medially
without smooth longitudinal strip (Fig. 42b-B). Mesosternum with impunctate areas behind
the fore coxae frequently are well delimited from the posterior punctate part
and not extending quite 1/2 to mid coxae.
Petiole with area of 4 ridges slightly to moderately transverse. In male antennae are paler or darker
yellow, slightly less clavate than in female. Eyes are relatively small, in lateral view the height of eye is
only about 1.2X of the height of horn projecting above it. Length of female 2.5-3.7 mm., male 2.6-3.1
mm. The only known host is Lucilia sp. (Boucek & Narendran
1981). Original distribution India,
Sri Lanka, Thailand, Cambodia, Malaysia.
Additional key references are Rohwer (1923), Masi (1947), and Habu
(1976). 9. Dirhinus himalayanus Westwood, 1836 (Hymenoptera: Chalcididae) (Dirrhinus crythroceras Cameron, 1906; Dirhinus luzonensis Rohwer, 1923; Dirhinus luciliae Rohwer, 1923; Dirhinus pachycerus Masi, 1927; Dirhinus vlasovi Nikolskaya, 1952; Dirhinoides mathuri Mani & Dubey, 1972). Body is very black,
with sparse coarse punctuation on thorax; wings are clear without distinct
hairs in female. The apex of each
horn viewed dorsally is almost rounded, without a notch (Fig. 41a-A & B). Distal 1/2 of hind
tibia with another shallow groove outside tarsal sulcus, the groove being
outlined by some extra ridges. Clava
of female symmetrical, with a broad conical apex (Fig.
41a-C). Hind tibia have a conspicuous external ridge. Length of female 2.4-4.9 mm. (the longest
of all species noted here). Host
range is broad in Diptera in carcasses and excrement (Bouek & Narendran
1981). Original distribution Arabia,
India, Malaysia, Sumatra, Japan, Philippines & Hawaii. Additional key references are Cameron
(1906), Rohwer (1923), Ferrière (1935), Roy & Siddons (1939), Roy et al.
(1940, 1950), Stearn (1943), Nikolskaya (1952, 1960), Dresner (1954), Habu
(1960), Mani & Dubey (1972), and Sankaran (1977, 1985), Srinivasan & Panicker (1988), Xue
(1989), Geetha-Bai (1990), Geetha-Bai & Sankaran (1977, 1985), Family Encyrtidae (Hymenoptera: Chalcidoidea) Fore wing venation
greatly reduced, with a single vein along margin and very short spur. Fore wing with uncus well separated from
postmarginal vein. Marginal vein
indistinct, somewhat punctiform. All
tarsi with 4 segments. Abdominal
petiole at most 1-segmented. Eggs are
dumbbell-shaped. Endophagous,
gregarious larval parasitoids. The
principal genus is Tachinaephagus. Key references are Thompson (1944), Wilson
& Woolcock (1960), Legner & Bay (1965a), Riek (1970), Ho et al.
(1974), Richards (1977), Trjapitzin (1978), Krombein et al. (1979), Prinsloo
& Annecke (1979), Noyes (1980), Noyes & Hayat (1984), Borror et al.
(1981), Subba-Rao & Hayat (1985), Gauld & Bolton (1988) and Goulet
& Huber (1993). Genus Tachinaephagus Ashmead, 1904
(Hymenoptera: Encyrtidae) (Tachinaephagus Girault, 1917; Australencyrtus
Johnston & Tiegs, 1921; Australomalotylus Risbec, 1956) There are three
species known to parasitize synanthropic Diptera in decomposing organic
wastes, although the whole genus is exclusively parasitic on the larvae or
pupae of many Diptera. Vertex of head
is almost 1/3rd to 1/2 the width of head, frons is broad. Eyes are hairy with long dense setae. Antennae inserted just below the lower eye
level with toruli (= sockets) widely separated, scape cylindrical, the
funicle segments 1-3X longer than broad (quadrate) (as in Fig. 38a-A). Mandibles have three sharp teeth. Scutellum long, shining but bears long
setae which arise from microscopic punctures. Legs are hairy. Basal
area of fore wing is evenly setose (Fig. 39a-A). Abdomen is either slightly shorter or
longer than thorax and flat above in dead specimens. Digitus of male bears 3 teeth. The eggs are encyrtiform (dumbbell-shaped). They are endophagous gregarious larval
parasitoids. Size varies with host
size and number of individuals developing on one host. Key references are Tachikawa (1963), Olton
& Legner (1975) and Subba-Rao (1978).
Other references are Ashmead (1904a,b), Girault & Sanders (1909,
1910a), Girault (1917), Dodd (1921), Froggatt (1921), Johnston & Tiegs
(1921), Hardy (1924), Gourlay (1930a,b), Newman & Andrewartha (1930),
Ferrière (1933), Gahan (1938), Risbec (1956), Ghesquière (1960), Olton (1971),
and Subba-Rao (1972, 1976). 10. Tachinaephagus javensis Subba-Rao, 1978
(Hymenoptera: Encyrtidae) Body is uniformly
dark brown. Legs, coxae and antennal
scape are testaceous yellow, funicle and club brown; venation and discal
cilia of forewing brown. Head vertex
is broader than 1/2 the head width; ocelli are large in an equilateral
triangle (Fig. 38a-C), the posterior
part separated from the ocular border by about their own diameter. Antennal scape is cylindrical, its pedicel
only slightly longer than the 1st funicle segment, 2nd and 3rd segments
shorter than 1st, 4-6 about equal but shorter than 3rd; club apically
rounded, the joints not well separated (Fig. 38a-A); thorax is
moderately convex; scutellum rugose; Fore wings with caudal cell moderately
wide, not parallel with submarginal vein (Fig. 38a-B); marginal fringe
short; abdomen longer than thorax, tergites shining and smooth. Males have not been found. Hosts include Haematobia and species of Musca
(Subba-Rao 1978). Original
distribution Indonesia. The key
reference is Subba-Rao (1978). 11. Tachinaephagus stomoxicida Subba-Rao, 1978 (Hymenoptera: Encyrtidae) Body is almost black;
head vertex with faint metallic green reflections; coxae are dark brown, rest
of legs brown with somewhat darker tarsi; scape brown, funicle and club dark
brown. Fore wings are slightly hairy
(Fig. 39a-A); head vertex more
than 1/2 width of head; ocelli in an equilateral triangle, the posterior pair
separated from ocular borders by a little more than their own diameter. Antennal socket is broad, semicircular and
shallow. Malar sulcus impressed
deeply only basally. Antennal scape
cylindrical, slightly dilated above, funicle segments well separated, the
club segments deep and club apex angular (Fig. 39a-C). Thorax is only slightly convex with
scutellum almost flat; mesoscutum scaly, scutellum smooth and shining except
for tiny pits bearing long black setae.
Fore wings are long and narrow, costal cell very narrow and parallel
with submarginal vein (Fig. 39a-A & B). Discal ciliation is coarse and dense. Abdomen is slightly longer than thorax,
almost quadrate, tergites smooth and shining. Males resemble female except for their antennae. The only known host is Stomoxys nigra (Subba-Rao 1978).
Original distribution in Uganda but established in Mauritius. Key references are Subba-Rao (1978) and
Greathead (1986). 12. Tachinaephagus zealandicus Ashmead, 1904 (Hymenoptera: Encyrtidae) (Tachinaephagus australiensis Girault, 1917; Stenosterys
fulvoventralis Dodd, 1921; Australencyrtus giraulti Johnston & Tiegs, 1921; Australomalotylus rageaui
Risbec, 1956). The wing venation
is greatly reduced with a single vein along the margin and a very short spur,
the stigmal vein, near its center (Fig. 39b-B). Costal cell of forewing wide, its border
not parallel with submarginal vein (Fig. 39b-B
& C). The antennae are
located in the middle of the face between the eyes. They are of less than 14 segments with the first segment
elongated, longer than the next two combined. As in Muscidifurax,
the pronotal disc is finely reticulate and almost imperceptibly
punctured. The color is shining black
with the underside of the thorax and the legs testaceous (Fig. 39b-D). Hosts include Calliphoridae, Fannia canicularis (L.) and Musca
domestica L. Original distribution Australasia. Key references are Tachikawa (1963), Olton
(1971), Olton & Legner (1974, 1975) and Subba-Rao (1978). Other references are Ashmead (1904),
Froggatt (1921), Johnston & Tiegs (1922), Hardy (1924), Gourlay
(1930a,b), Newman & Andrewartha (1930), Ferrière (1933), Gahan (1938,
Risbec (1956), and Legner & Olton (1968b). Family Pteromalidae (Hymenoptera: Chalcidoidea) Forewing marginal
vein is less than twice as long as stigmal (Fig. 19b-A). Antennae have 6 or fewer funicle
segments. Hind tarsus with at least 5
segments. Abdominal petiole often
conspicuous and with dorsal carinae.
They are ectophagous, pupal parasitoids inside the host puparium. Important genera are Muscidifurax, Nasonia, Pachycrepoideus, Spalangia, Sphegigaster,
and Urolepis. Key references are Latrielle (1805),
Dalman (1820), Walker (1836, 1839), Curtis (1839), Förster (1841, 1956),
Ashmead (1896b), Dalla-Torre (1898), Perkins (1910), Waterston (1915),
Fortsetzung (1916), Girault (1916, 1921), Parker (1924), Parker &
Thompson (1928), Ceballos (1941), Thompson (1944), Delucchi (1955), Boucek
(1963), Peck (1963), Baltazar (1966) DeSantis (1967, 1979, 1980), Graham
(1969), Riek (1970), Abraham (1975, 1978a), Wylie (1976b), Richards (1977),
Burks (1979), Gordh et al. (1979), Krombein et al.
(1979), Barlin & Vinson (1981), Borror et al. (1981),
Yoshimoto (1984), Subba-Rao & Hayat (1985), Gauld & Bolton (1988),
Hoebeke & Rutz (1988), Delvare & Aberlenc (1989), Grissell &
Schauff (1990), Goulet & Huber (1993). Genus Muscidifurax Girault & Sanders, 1910
(Hymenoptera: Pteromalidae) Wing venation is
incomplete and the marginal vein is about twice as long as the stigmal vein (Fig. 23a-A). Antennal insertions are in the middle of
the face between the eyes. The first
antennal segment is longer than the next two combined, and there are less
than 14 antennal segments. Females
have one ring segment and 7 funicular segments (Fig. 23a-B), males have 2 and
6, respectively. The disc of the
pronotum and the head are finely reticulate, without coarse punctures. The several species are very similar in
appearance but have good behavioral characters distinguishing them (Legner
1969a,b; Legner et al. 1976, Kogan & Legner 1970),
and they are electrophoretically distinct (Kawooya 1983). Females are black; males black with
translucent testaceous spots on the first, second and third ventral abdominal
segments. The eggs are
hymenopteriform, covered with small tubercles that distinguishes them from
those of Spalangia (Gerling 1967)
and with size differences for some species.
The species may be either solitary or gregarious. The average mass of solitary species of
this genus is relatively fixed, as host size does not appreciably affect them
(Legner 1969a). They are ectophagous
pupal parasitoids. The key reference
is Kogan & Legner (1970). Van den
Assem & Povel (1973) discussed courtship behavior patterns that are
specific. Markwick (1974) and
Markwick et al. 1989 gave biological characteristics that distinguish M. raptor
and M. zaraptor and these species from Spalangia endius. Other references
referring to distribution, identity, biology and genetics of species of this
genus are Frison (1927), Anonymous (1938), Nikolskaya (1952), Dresner (1954),
Legner (1967b, 1969a,b; 1972, 1987a,b,c,d,e; 1988a, 1988b, 1988c,d; 1989a,
1990, 1991a, 1991b, 1993), Legner & Dietrick (1974), Legner & Gerling
(1967), Legner et al. (1967), McCoy (1967), Wylie (1967,
1971a,b, 1972b), Berry & Speicher (1972), Broadbent (1972), Kotschetova
& Tjutjunkova (1973), Ables & Shepard (1974), Kawooya (1983), van den
Assem (1985), Propp (1986), Mandeville & Mulles (1990b,c), Mandeville et al.
(1990), Mann et al. (1990b), Wilhoit et al.
(1991a). 13. Muscidifurax raptor Girault & Sanders, 1910
(Hymenoptera: Pteromalidae) (PHOTO) The fringe of setae
(or their sockets) is well developed on the posterio-apical margin of the
fore wing (Fig. 23a-A). The stigma forms an abrupt enlargement at
the end of the stigmal vein, usually subquadrangular and distally acuminate
where a hair is often encountered (Fig. 27a-A). The uncus is directed distally. The frontal grooves are parallel (Fig. 27a-B). The median area of the propodeum of female
is closed behind (Fig 27a-C). The male digitus is subtrapezoidal,
broadest distally and usually with 3 apical processes (Fig. 27a-D). Hind legs with one tibial spur (Fig. 27a-E). Hind leg with tarsal claw bearing less
than 11 setae (Fig. 27a-F). Length of female is 2.33 mm, male 1.73
mm. The species is biparental and
solitary. An almost cosmopolitan
species which has not been collected in the Oriental region nor most of
Asia. Key references are Girault
& Sanders (1910a,c), McCoy (1963, 1967), Legner (1969a,b; 1976a), Legner
& Gerling (1967), Kogan & Legner (1970), Morgan & Patterson
(1975a), Fabritius (1978, 1981b,c,d; 1983a, 1984, 1986c) and Kawooya
(1983). Additional
references are DeBach (1943), Sharma (1967, 1971), Burton & Turner
(1968), Shibles (1969), Wylie (1970), Victorov & Azizov (1972), Markwick
(1974), Tingle & Mitchell (1975), Podoler & Mendel (1977), Fabritius
(1979b, 1980a,b), Morgan et al. (1979b), Capehart et al.
(1981), Coch (1981), Klunker (1981, 1982), Merritt et al. (1981), Rutz
& Axtell (1981), Shepard & Kissam (1981), Propp & Morgan (1983b,
1984a, 1985a), and Geden et al. (1992a,c). 14. Muscidifurax raptorellus Kogan & Legner, 1970 (Hymenoptera:
Pteromalidae) The fringe of setae
(or their sockets) is absent from the posterio-apical margin of forewing, as
in M. zaraptor (Fig. 26b-A). The stigma may or may not be elongated,
sometimes being roundly clubbed. The
uncus is directed towards of the apex of the wing. The pedicel of female antennae is not slender proximally (Fig. 26b-B), and frontal
grooves are usually convergent (Fig. 26b-C). The median area of the propodeum of female
is usually open behind with the lateral and median plicae not fused in the
middle (Fig. 26b-D). The male digitus is subtrapezoidal,
broader distally and usually with only 3 distal processes (Fig. 26b-E). Length of female is 2.11 mm, male 1.82 mm.
The Peru race averages female 2.33 mm, male 1.72 mm although they may assume
the smaller size of the Chilean race when deprived of host feeding. This South American species occurs as several
races demonstrating various degrees of gregarious development and number of
eggs deposited into a single host puparium.
The Peruvian race is usually solitary in development, but seasonal
variations in larval cannibalism vary.
The Chilean race has shown the greatest degree of gregarious
development (> 80%) and is quite thigmotactic. All known races are biparental. Key references are Kogan & Legner (1970), Kawooya (1983),
and Legner (1987b,e; 1988a,b,c; 1989a,b,c,d; 1990, 1991a,b; 1993).
Superparasitism (= insertion of more than one parasitoid egg per host)
occurs in both the Peruvian and Chilean race, and subsequent cannibalism by
hatched larvae always follows. The
Peruvian race deposits a lower number of eggs per host than the Chilean race
but cannibalism intensity is higher.
Therefore, it is difficult to determine the exact number of eggs
initially deposited by both species.
The number of adult parasitoids that survive is always less in the
Peruvian race and usually averages about one. On the contrary, more adult survivors usually occur in the
Chilean race, averaging about seven at a host density of 20 per 24 hrs. A standardization of host density, size, age
and duration of exposure to parasitization is essential in experiments as they
influence the number of eggs deposited and the rate of cannibalism. 15. Muscidifurax raptoroides Kogan & Legner, 1970 (Hymenoptera:
Pteromalidae) The fringe of setae
(or their sockets) is well developed on the posterio-apical margin of
forewing. The stigma is formed as a
gradual dilation of the tip of the stigmal vein, and the uncus is directed
distally (Fig. 28b-B). The frontal grooves are convergent. The male digitus is subrectangular and
usually with 4 apical processes (Fig. 28b-C). Spiracle of the female propodeum is not
remote from the lateral plica, i.e., the spiracular ridge is shorter than the
largest diameter of the spiracle (Fig. 28b-A). Length of female 2.31 mm, male 1.78
mm. This species is biparental and
solitary. It was originally known
from Costa Rica and southern Mexico.
Key references are Kogan & Legner (1970), and Legner et al.
(1976). 16. Muscidifurax uniraptor Kogan & Legner, 1970
(Hymenoptera: Pteromalidae) The fringe of setae
(or their sockets) is well developed on the posterio-apical margin of
forewing. The stigma is formed as a
gradual dilation of the tip of the stigmal vein, and the uncus is directed
distally (Fig. 28a-B). The frontal grooves are convergent. When male are present, the digitus is
subrectangular and usually with 4 distal processes (Fig. 28a-C). The spiracle of the female propodeum is
remote from the lateral plica, i.e., the spiracular ridge is as long as the
longest diameter of the spiracle (Fig. 28a-A). Length of female 2.15 mm, male 1.68 mm,
the occasional male are the smallest in this genus. This species is uniparental and solitary in development. It was originally known only from Puerto
Rico where it occurs with the biparental M. raptor. Key references are Kogan & Legner
(1970), Legner (1985a,b; 1987a,d; 1988), and Kawooya
(1983). 17. Muscidifurax zaraptor Kogan & Legner, 1970
(Hymenoptera: Pteromalidae) The fringe of setae
(or their sockets) is absent from the posterio-apical margin of the forewing
as in M. raptorellus. The stigma
is small, elongated, suboval, often acuminate at the internal angle where a
hair is implanted (Fig. 26a-A). The uncus is usually directed toward the
anterior margin of the wing. The
antennal pedicel of female is obviously slender proximally (Fig. 26a-B), and frontal grooves
are usually parallel (Fig. 21a-C). The median area of the propodeum in female
is closed behind by the fusion of the lateral and median plicae (Fig. 26a-D). The male digitus is subrectangular with
4-5 apical processes (Fig. 26a-E). Hind leg with tarsal claw bearing more
than 11 setae (Fig. 26a-G). Length of female is 2.,84 mm, male 2.18
mm. This species is biparental,
solitary and occurs naturally in the western Nearctic. Key references are Kogan & Legner
(1970), Wylie (1971b, 1979), Legner 1977, 1979a,b,c) and Kawooya (1983). <PHOTO> Additional
references are Coats (1976), Petersen & Meyer (1983a,b), Petersen &
Matthews (1984), Petersen & Pawson (1988a,b; 1991), Petersen et al.
(1986, 1992), Pawson et al. 1987, Mandeville (1988),
Mandeville & Mullens (1990a), and Mandeville et al. (1988), Genus Nasonia
Ashmead (Hymenoptera: Pteromalidae) 18. Nasonia vitripennis (Walker, 1836)
(Hymenoptera: Pteromalidae) (Nasonia Ashmead, 1904; Mormoniella
Ashmead, 1904; Pteromalus vitripennis Walker,
1836; Pteromalus
muscarum Hartig, 1838; Pteromalus abnormis Boheman, 1856; Dicyclus
pallinervosus Walker, 1872; Stictonotus
insuetus Walker, 1872; Mormoniella
brevicornis Ashmead, 1904; Nasonia brevicornis Ashmead, 1904; Platymesopus
macellariae Brèthes, 1913di). Head reticulate,
wider than broad. Upper margin of
antennal sockets is slightly above level of the lower margin of compound
eye. A distinct dorsocephalic ridge
exists. The malar sulcus is not as
pronounced as in Spalangia endius (see Fig. 37a-D). Antennae are stout with two ring segments
and 6 funicular segments (Fig. 24a-B); the pedicel is
ca. 2 1/2X longer than first funicular segment. The pronotal collar bears an anterior ridge and is strongly
reticulate ventrolaterally. The
mesosternum and scutellum is strongly reticulate, the frenal groove is
distinct (Fig. 24a-A). Propodeum has a median plica which lacks
lateral branches. The prosternum
bears a median groove. Fore wing with
marginal veins of uniform width and as wide as post marginal vein. Middle leg bears one tibial spur and dense
bristles over its entire length. The
spur is ca. 1/3rd as long as first tarsomere. The hind leg bears one tibial spur with a bristle-like
structure (Fig. 24a-C). Tergite 9 of abdomen with a pair of
slightly projecting sensory structures, each with 5 long setae. Length of female 1.10-1.90 mm, male
1.00-1.50 mm. Hosts are primarily
blowflies in animal carcasses, although occasionally parasitization occurs in
muscoid Diptera found in manure and accumulated organic wastes. The species is cosmopolitan. General appearance (Fig. 24a-E). Key references are Rueda & Axtell
(1985b). Other key
references to this most extensively studied (and undoubtedly the least
beneficial) fly parasitoid include Froggatt (1914a,b; 1918), Froggatt &
McCarthy (1914), Robaud (1917), Altson (1920), Miller (1922, 1972, Miller
& Tsao 1974), Tiegs (1922), Hardy (1924, 1925), Séguy (1929), W. Davies
(1930), Dautert Willimzik (1931), Cousín (1930, 1933), Evans (1933), Smirnov
(1934), Smirnov & Kuzina (1933), Smirnov & Vladimirow (1934),
Vladimirova & Smirnov (1934), Robaud & Colias-Belcour (1935), Fukuda
(1939), Jacobi (1939), DeBach (1940), DeBach & Smith (1941a,b; 1947),
DeBach (1943), van der Merwe (1943), Geršenson (1946), Moursi (1946), Ray
(1948, 1953, 1955a,b; 1957, 1958), Kayhardt & Whiting (1949), Kayhardt
(1956), Ray & Whiting (1954), Ray et
al. (1954), Ullyett (1949, 1950),
Ullyett & DeVries (1940), Friedler & Ray (1951), Whiting (1951,
1954a,b; 1955a,b,c,d; 1956a,b; 1957, 1958, 1960, 1965, 1967), Wylie (1958,
1962, 1963, 1964a,b; 1965a,b,c; 1966a,b,c; 1970, 1973b, 1976a), Whiting &
Busa (1959), Edwards (1954a,b; 1955a,b; 1961), Saul (1954, 1955, 1957, 1960,
1981), Saul & Kayhart (1956), Barrass (1961), Saul et al. (1965, 1967),
Cutler (1955), Firschel & Wolsky (1956), Fluke (1957), Rohner &
Wolsky (1957), Varley & Edwards (1957), Pennypacker (1958), Schneiderman
& Horwitz (1958), Schneiderman et
al. (1956a,b,c), Ohgushi (1959a,b;
1960, 1961), Ohgushi & Kato (1959), Barrass (1960a,b; 1961, 1962, 1965,
1969, 1976a,b), King (1961a,b; 1962a,b,c,d; 1963), King & Hopkins (1963),
King & Rafai (1970), King & Ratcliffe (1969), King & Richards
(1968), King et al. (1968, 1969), Ankersmit et al.
(1962), Nagel (1962), Nagel & Pimentel (1963, 1964), Saunders (1962,
1965a,b,c; 1966a,b; 1967, 1968, 1973, 1974a,b; 1978, 1981), Saunders &
Sutton (1969), Saunders et al. (1970), Mortimer & van Borstel
(1963), Beard (1964b, 1972), Hopkins & King (1964), Madden (1964), Madden
& Pimentel (1965), Hair & Turner (1965), Velthuis et al.
(1965), Pimentel (1966, 1984), Pimentel & Al-Hafidh (1963, 1965),
Pimentel et al. (1963, 1978), Azab et
al. (1967a,b), Chabora (1967,
1970a,b,c; 1972, 1980), Chabora & Chabora (1971), Chabora & Pimentel
(1966, 1970), Clark & Cole (1967), Clark & Kidwell (1967), Legner
(1967b,c), Legner & Gerling (1967), Ratcliffe & King (1967, 1968,
1969a,b,c; 1970), Takahashi & Pimentel (1967), Walker (1967), Walker
& Pimentel (1966), Rabinovich (1969), Richards (1969), Slifer (1969),
Smith (1969), Smith & Pimentel (1969), Sanger & King (1971), Barash
& Ryder (1972), Copland & King (1972), Holmes (1972, 1974a,b) Rafai
& King (1972), Grant et al. (1974, 1980), Olson & Pimentel
(1974), van den Assem (1974), van den Assem et al. (1981), Cassida
(1975), I. Davies (1975), I. Davies & King (1975), Sagan & Fashing
(1977), van den Assem (1977, 1985), van den Assem & Feuth-DeBruijn
(1977), van den Assem & Putters (1980), van den Assem & Vernel
(1979), van den Assem & Visser (1976), van den Assem et al. (1980a,b,; 1981,
1984), White & Grant (1977), Abraham (1978b, 1985), Abraham & König
(1977),Best (1978), Cornell & Pimentel (1978), DeLoof et al.
(1979a,b), Fashing & Sagan (1979), Smith & Cornell (1979), Zareh et al.
(1980), Bull (1982), Skinner (1982, 1983, 1985), Jachmann (1983), Werren
(1984), Werren et al. (1981, 1986), Wibel et al. (1984),
Xue (1984a, 1986d, 1987b, 1988c), Xue et
al. (1987b, 1988), Huger et al.
(1985), Parker & Orzack (1985), Orzack et al. (1986), Preutu
(1986), Schmidt (1986), Fried (1987), Fried & Pimentel (1986, 1990),
Jones & Turner (1987), Omar (1987a,b), and Darling & Werren (1990). Genus Pachycrepoideus Rondani, 1875 (Hymenoptera: Pteromalidae) 19. Pachycrepoideus vindemiae Rondani, 1875
(Hymenoptera: Pteromalidae) (Encyrtus vindemiae Rondani,
1975). This species is
similar in appearance to species of Muscidifurax
but is distinguished by the short marginal vein which is not longer than the
stigmal vein. The wing venation is
incomplete. The antennae arise from
the middle of the face between the eyes with the first segment longer than
the next two combined. Antennae have
3 anelli (Fig. 22a-D) and less than 14
funicular segments. The head and the
disc of the pronotum are finely reticulate without obvious punctures. The pronotal collar is without a
transverse ridge on its anterior margin (Fig. 22a-A). Propodeum without median folds (Fig. 22a-B). Mesosternum has a pair of anterior
tubercles (Fig. 22a-C). Digitus of male with only 2 apical
processes (Fig. 22a-E). The species is ectophagous, usually
solitary on the pupa within the puparium.
It is cosmopolitan in distribution (Girault & Sanders 1910, Jaynes
1930, Crandall 1939, Nostvik 1954, Steve 1959, Legner et al. 1967, Legner
& Olton 1968, van den Assem 1974, Rueda & Axtell 1985b). Additional key
references are Pickens et al. (1975), Pickens & Miller
(1978), Morgan (1980b), Morgan &
Patterson (1975a), Morgan et al. (1978b), Pickens (1981), van Alphen &
Thunnissen (1983), Thompson (1981a,b), Thompson et al. (1983), and
Panicker & Srinivasan (1986). Genus Spalangia Latreille, 1805 (Hymenoptera: Pteromalidae) (Prospalangia Brèthes, 1915) Species of Spalangia have incomplete wing
venation, with the marginal vein about 10X as long as the stigmal vein (Fig. 21b-A). The antennae are situated at the front
margin of the head (Fig. 21b-B). The first antennal segment is longer than
the next two combined (Fig. 21b-C). There are less than 14 funicular segments. The pronotal disc is coarsely punctured
with polished interspaces (e.g., Figs. 29b-A & 33a-C). The eggs are hymenopteriform and smooth
with the size being variable according to the species (Gerling 1967). Host size does not much affect the size of
solitary species of this genus (Legner 1969a,c). They are usually solitary ectophagous pupal parasitoids. The 9 species treated here are easily
distinguished among themselves. Key
references are Boucek (1963, 1965, 1988).
Markwick (1974) gives biological characteristics of S. endius
and distinguishes this species from Muscidifurax. Other references
include Cameron (1881), Ashmead (1896a), Pinkus (1913), Richardson (1913),
Brethes (1915), Fullaway (1915), Vandenburg (1928, 1931), Simmonds (1929a,b),
Graham (1932), Handschin (1934), McCoy (1963), Legner (1965a, 1967a,b),
Gerling & Legner (1968), Burks (1969, 1979), Mourier (1971a,b), Azizov
(1972), Kotschetova & Azizov (1972), Wylie (1972a), Chu (1984), Rueda
& Axtell (1985b), Propp (1986), Mandeville (1988), Mandeville &
Mullens (1990c), Mandeville et al. (1990), Huang (1990), Mann et al.
(1990a,b), Omar et al. (1991b). 20. Spalangia cameroni Perkins, 1910
(Hymenoptera: Pteromalidae) (Spalangia
melanogastra Masi, 1940; Spalangia
atherigonae Risbec, 1951). The disc of the
head between the eyes is sparsely punctured with the punctures mostly
separated by more than their diameters.
The disc of the pronotum has an isolated wavy crossline consisting of
large closely spaced punctures near to and parallel to the posterior margin (Fig. 33a-C). The pronotal collar is rounded anteriorly,
without a distinct ridge (Fig. 33a-C, D & E). The anterio-lateral surface of the
pronotum is rugose or crowdedly rugosely punctured. The length of the gena is longer than that of the eye (Fig 33a-A). The ratio of abdominal petiole length to
the narrowest width is 1.8 in femaleand 2.5 in male (Fig. 33a-F & G), and there are no
lateral hairs present. The length of
the extended body is 2.5-3.3 mm in femaleand 2.4-3.0 mm in male. A cosmopolitan species. Key references are Perkins (1910),
Simmonds (1929b), Masi (1940), Risbec (1951), Boucek (1963), Legner &
Brydon (1966), Legner & Gerling (1967), Legner & Olton (1968, 1979),
Legner (1969a), Legner & Greathead (1969), Legner et al. (1967, 1976,
1990a,b), Gerling & Legner (1968), Wylie (1972a), Markwick (1974), Rutz
& Axtell (1980a), Moon et al. (1982), Scott et al. (1988), Morgan
et al. (1989), and Maini & Bellini (1990a,b). 21. Spalangia drosophilae Ashmead, 1887 (Hymenoptera: Pteromalidae) Head thicker than
wide, with hairy punctures sparsely distributed, and ocellar line complete (Fig 29a-D). Malar sulcus distinct. Antennae with reticulated scape, pedicel
ca. 2 1/4 X as long as first funicular segment. Pronotal collar without anterior ridge, hairy punctures scarce
or absent anterolaterally and transverse line of hairy punctures absent
posteriorly (Fig. 29a-A & B). Mesoscutum and scutellum with very few
punctures (Fig. 29a-C). Frenal groove indistinct. Middle of propodeum with deep punctures
forming a Y-shaped row (Fig. 29a-C). Mesopleuron with set of punctures. Mesosternum with short median longitudinal
groove lacking punctures anteriorly.
Middle leg with one tibial spur with few bristles, bitial spur about
1/2 to 3/4 length of first tarsomere.
Hind leg with one smooth unbristled tibial spur. Tergite 9 of abdomen with pair of slightly
flattened sensory structures, each with 5 long setae and densely surrounded
by short spines and setae. Petiole
rugosely punctuated dorsally and ventrally.
Length of female 0.90-1.60 mm, male 0.80-1.25 mm. Hosts are primarily tiny Diptera breeding
in a variety of habitats (e.g., Hippelates
spp. in soil, Phoridae in dung, etc.).
Key references are Boucek (1963) and Rueda & Axtell (1985b). Additional
references are Ashmead (1887), Lindquist (1936), Simmonds (1944, 1946,
1947a,b; 1952, 1953a,b; 1954, 1956), Legner & Bay (1964a,b, 1965b,c),
Legner et al. (1966a,b,c,), Legner (1967a, 1968, 1969a), Capehart et al
(1981), Marshakov (1983). 22. Spalangia endius Walker, 1839
(Hymenoptera: Pteromalidae) (Spalangia
muscidarum var. stomoxysiae Girault, 1916; Spalangia
philippinensis Fullaway, 1917; Spalangia
muscidarum var. texensis Girault, 1920; Spalangia orientalis L. F. Graham, 1932; Spalangia
stomoxysiae Peck, 1951). The disc of the
head between the eyes is sparsely punctured with the punctures mostly
separated by more than their diameters (Fig. 37a-C). The disc of the pronotum has an isolated
wavy crossline consisting of large closely placed punctures in front of and
parallel with the posterior margin (Fig. 37a-A
& B). The pronotal collar is
rounded anteriorly, without a distinct ridge. The anterio-lateral surface of the pronotum is umbilicately
punctured with the interspaces smooth, not rugose (Fig. 37a-A & B). The length of the gena is about equal to
that of the eye (Fig. 37a-C). The malar sulcus is distinct (Fig. 37a-D). The ratio of abdominal petiole length to
the narrowest width is 1.7 in female and 2.0 in male, with lateral hairs rare
(Fig. 37a-E & F). The length of the extended body is 2.0-3.0
mm in female and 1.9-2.6 mm in male.
A cosmopolitan species. Key
references are Boucek (1963), Legner (1965a, 1967b, 1979b,c), Legner et al.
(1965, 1976), Legner & Brydon (1966), Legner & Greathead (1969), Ables & Shepard (1974b), Morgan et al.
(1975a,b; 1976a,b; 1977, 1978a, 1979a, 1981a,b; 1986), Morgan & Patterson
(1975b, 1977, 1989), Morgan (1981b), Rueda & Axtell (1985). Additional
references are Walker (1839, 1846), Girault (1915, 1916, 1920), Fullaway
(1917), Graham (1932), Handschin (1932), Peck (1951), Dresner (1954), Shibles
(1969), Yust (1970), Tingle & Mitchell (1975), Ables & Shepard
(1976b), Ables et al. (1976), Weidhaas et al.
(1977), Ienistea & Fabritius (1978), Schmidt & Morgan (1978),
Thornberry & Cole (1978), Rutz & Axtell (1980a), Morgan (1980a,b;
1981b, 1985), Morgan et al. (1981b, 1986), Merritt et al.
(1981), Petersen et al. (1983), Propp & Morgan
(1983a,b; 1984a,b; 1985a,b), Donaldson & Walter (1984), Stafford et al.
(1984), Bathon & Fabritius (1985), Bloomcamp (1985), Cabrales et al.
(1985), Arellano & Rueda (1888), Xue (1988c), Xue et al. (1987a, 1989). 23. Spalangia gemina Boucek 1963
(Hymenoptera: Pteromalidae) Head facial view
subtriangular, almost as wide as long, with large moderately prominent eyes
and genae converging in a straight line (Fig. 33b-A). Frons densely punctuated, interspaces very
narrow to about as wide as punctures (Fig. 33b-A). Antennal sockets quite deep, transversely
ribbed in deepest parts, smooth in the middle except fine rugosity between
antennal sockets. Side view of head
ca. 2X as long as thick. Antennae
short, slightly thickened at tip; scape dull, granulated and slender, at
least as long as 5 following segments combined (Fig. 33b-B). Pronotum with transverse ridge, collar not
margined anteriorly, with very deep, arched, coarsely crenate cross line off
hind margin. All surface before this
furrow coarsely reticulated rugose save for a low triangle just at cross
line. Hairy punctures elevated. Abdominal petiole about 1.4X as long as
broad, with almost parallel sides, bare with distinct ridges. The body is black. Tarsi are pale testaceous except the dark
claw segments. Length of female 3.1-4.1 mm, male 2.6-3.5 mm. Original distribution Mauritius, South
Asia, Fiji & tropical South America [probably established in
Florida]. Key references are
Boucek1963, 1965), and Morgan et al. (1991). 24. Spalangia longepetiolata Boucek, 1963 (Hymenoptera: Pteromalidae) The disc of the
head between the eyes is sparsely punctured, the punctures being separated
mostly by more than their diameters (Fig. 32b-A). The disc of the pronotum has a distinct
wavy coarse line of large crowded punctures parallel to and just anterior to
the posterior margin (Fig. 32b-B & C). The pronotal collar is rounded at the
anterior margin. The anterio-lateral
surface of the pronotum is rugose or crowdedly rugosely punctured (Fig. 32b-B & C). The length of the gena is greater than
that of the eye. The ratio of
abdominal petiole length to the narrowest width is 1.5 in female and 3.5 in
male (Fig. 32b-D & E). Thus, female do not have the long petiole
which is found in male and which generated the name of this species (Boucek
1963). Lateral hairs absent on
petiole. The length of the extended body
is ca. 2.2-3.1 mm in female and
2.0-2.8 mm in male. The species was
originally known from Central Africa.
Additional key references are Boucek (1965), and Legner & Olton
(1969b). 25. Spalangia nigra Latreille, 1805
(Hymenoptera: Pteromalidae) (Spalangia hirta Haliday, 1833; Spalangia
rugosicollis Ashmead, 1894; Spalangia muscae Howard, 1911). The disc of the
head between the eyes is very densely crowdedly punctured, the punctures
being separated by less than their diameters (Fig. 36b-B). The pronotum is without a distinct wavy
line of large punctures parallel to the posterior margin, and the pronotal
collar is rounded anteriorly without a distinct ridge (Fig. 36b-C & D). The anterio-lateral surface of the
pronotum is rugose or crowdedly ruguosely punctured. The length of the gena is greater than
that of the eye (Fig. 36b-B). The malar sulcus is indistinct (Fig. 36b-E). The ratio of abdominal petiole length to
the narrowest width is 2.0 in female and 2.2 in male (Fig. 36b-G). There are at least 12 lateral hairs
present on each side of petiole. The
length of the extended body is 3.0-4.5 mm in female and 2.5-3.7 mm in
male. This was originally a Holarctic
species. General appearance in Fig. 36b-H & I. Key references are Latreille (1805, 1809),
Dalman (1820), Haliday (1833), Bouché (1834), Nees (1834), Curtis (1839),
Howard (1911), Richardson (1913b), Graham-Smith (1919), Girault (1920),
Clausen et al. (1927), Parker & Thompson (1928), Perron (1954), Boucek
(1963), Legner (1969a), Rutz & Axtell (1980a), Hall & Fischer (1988). 26. Spalangia nigripes Curtis, 1839
(Hymenoptera: Pteromalidae) (Spalangia
nigripes Curtis, 1839; Spalangia hyaloptera Förster, 1850; Spalangia formicaria Kieffer, 1905; Spalangia muscarum Girault, 1920). The disc of the
head between the eyes is sparsely punctured, the punctures being separated
mostly by more than their own diameters (Fig. 37b-B). The disc of the pronotum is without a
distinct wavy cross-line of large crowded punctures parallel to and just
anterior to the posterior margin (Fig. 37b-A). The pronotal collar is rounded at the
anterior margin (Fig. 37b-A). The anterio-lateral surface of the
pronotum is umbilicately punctured with the interspaces smooth. The length of the gena is less than that
of the eye (Fig. 37b-B). Th ratio of abdominal petiole length to
the narrowest width is 1.6 in female (Fig. 37b-C). The length of the extended body is 2.5-3.7
mm in female and 2.0-3.1 mm in male.
This species was originally Holarctic in distribution. General appearance in Fig. 37b-D. Key references are Curtis (1839), Walker
(1848), Förster (1850), Dalla-Torre (1898), Kieffer (1905), Girault (1920),
and Boucek (1963). 27. Spalangia nigroaenea Curtis, 1839 (Hymenoptera: Pteromalidae) (Spalangia homalaspis Förster, 1850; Spalangia astuta Förster, 1851; Spalangia muscidarum Richardson, 1913; Prospalangia
platensis Brèthes, 1915; ?Spalangia abenabooi Girault, 1932; Spalangia sundaica L. F. Graham, 1932; ?Spalangia mors Girault, 1933). The disc of the
head between the eyes is sparsely punctured with the punctures separated
mostly by about their diameters. The
disc of the pronotum has an isolated wavy crossline consisting of closely
spaced large punctures in front of and parallel to the posterior margin, and
the pronotal collar is bordered anteriorly by a narrow groove setting off the
ridge-like margin (Fig. 34a-A & B). The anterio-lateral surface of the
pronotum is rugose or crowdedly rugulosely punctured. The length of the gena is less than that
of the eye (Fig. 34a-C). Middle of propodeum with parallel rows of
punctures that diverge posteriorly (Fig. 34a-D). The ratio of abdominal petiole length to
the narrowest width is 1.7 in female and 2.2 in male (Fig. 34a-E & F). The length of the
extended body is 2.9-3.8 mm in female and 2.5-3.5 mm in male. The species is cosmopolitan. Key references are Curtis (1839), Förster
(1850, 1851), Johnston & Bancroft (1912), Pinkus (1913), Richardson
(1913a,b), Parker (1924), Parker & Thompson (1928), Girault (1932, 1933),
Graham (1932), Handschin (1932), Lindquist (1936), Peck (1951), Boucek
(1963), Legner (1965a), Legner & Brydon (1966), Legner & Olton
(1968b), Legner et al. (1965, 1967), Hoelscher & Combs (1969), Azizov
(1972), Kochetova 7 Azizov (1972),Rutz & Axtell (1980a,b), and Siafacas
(1980). 28. Spalangia rugulosa Förster, 1850
(Hymenoptera: Pteromalidae) Head, excluding
antennal sockets, irregularly coarsely puncuated (even on temples). Genae converge and eyes large. Eye longer than gena (Fig. 36a-B). Head in lateral view thickened with temple
about 2X narrower than eye. Antennal
scape dull, granulated, slender, as long as 5.5 following segments combined;
1st funicular segment longer than broad, the 2nd and 3rd quadrate, distal
segments slightly transverse, clava as long as 2.7 preceding segments (Fig. 36a-A). Pronotum somewhat globose, with a margin,
irregularly crowdedly punctured except for a narrow strip at hind margin (Fig. 36a-C). Punctures of this smooth strip are deeper
as a wavy line. Propodeum with
complete median carina. Abdominal
petiole ca. 1.8X as long as wide, deeply incised submedially on anterior
margin. Third abdominal tergite 3X as
long as the 2nd at meson. Dense
hairs of body black; body black, sometimes with a faint metallic hue on head
and thorax; tarsi also black, anterior basitarsus brown. Length of female 3.1-3.8 mm, male 3.1 mm.
Principal host Muscina stabulans Fallen. Original distribution Europe and Central
Asia. Key references are Förster
(1850) and Boucek (1963). Genus Sphegigaster
(Hymenoptera: Pteromalidae) 29. Sphegigaster spp. (Hymenoptera: Pteromalidae) The wing venation
is greatly reduced with a single vein along the anterior margin and a spur,
the stigmal vein near its apex. The
antennae are located on the middle of the face between the anterior margins
of the eyes, not on a platform. They
are of less than 14 segments with the first segment elognated, longer than
the next two combined. The pronotal
disc is finely densely punctured. The
color is shining black with the legs testaceous. The abdomen is smaller than the thorax in contrast to other
genera treated here (Fig. 20b-A). A Sphegigaster sp. was originally found
active on Musca domestica and Stomoxys calcitrans
only in East and South Africa (Legner & Olton 1968, Legner &
Greathead 1969). However, the genus
is well represented by several species in the Palearctic (Nicholskaya 1952,
Graham 1969). Genus Urolepis Ashmead 1896
(Hymenoptera: Pteromalidae) 30. Urolepis rufipes (Ashmead, 1896)
(Hymenoptera: Pteromalidae) (Urolepis Walker, 1946; Halizoa Förster,
1956; Pteromalus subgen. Halizous Thomson, 1878; Halizoa rufipes Ashmead, 1896). Head reticulate,
wider than broad, lower margin of antennal sockets well above level of lower
margin of eye. Dorsocephalic ridges
distinct. Malar sulcus slightly
distinct. Antennae with last distal
funicular segments and clava broad, two ring segments present and pedicel
about 1 1/2X longer than first funicular segment (Fig. 24b-B). Pronotal collar with anterior ridge and
coarsely reticulate ventrolaterally.
Mesoscutum and scutellum coarsely reticulate (Fig. 24b-A). Frenal groove usually not clearly
apparent. Propodeum with median
plicae without lateral branches and bearing dense fine setae along lateral
margin. Prosternum with median
groove. Fore wing with marginal vein
of uniform width, slightly wider than post marginal vein and apical margin with
fringe setae. Middle leg with one
tibial spur bearing sparse bristles along proximal 2/3rds of entire length,
spur ca. 1/2X as long as first tarsomere.
Hind leg with one tibial spur lacking bristles (Fig. 24b-C). Tarsal claw bears 5 setae (Fig. 24b-D). Tergum 9 of abdomen with a pair of
projecting sensory structures each with 5 long setae. Key reference is Rueda & Axtell
(1985b). Additional key references
are Ashmead (1896b), Nabrotsky et al. (1974), Deonier & Regensburg
(1978), Burks (1979), Petersen et al. (1985), Smith & Rutz (1985,
1986, 1987, 1991b), and Pawson et al. (1987). Families Cynipidae, Figitidae & Eucoilidae (Hymenoptera: Cynipoidea) Antennae are never
elbowed, the scape only slightly longer than broad and slightly shorter than
first flagellar segment. Abdomen may
be laterally compressed, the first abdominal segment is cylindrical or
annular, or minute, indistinct, fused dorsally with tergite 2. Parasitoids of synanthropic Diptera are
rare among members of this family.
Key references are Keilin & Baume-Pluvinel (1913), Girault (1921),
James (1928), Huzimatsu (1940), Thompson (1944), Jenni (1951), Weld (1952),
Walker (1959), Hadorn & Walker (1960), Belizin (1963), Bakker et al.
(1967, 1972), Streams (1968), Eijsackers & van Lenteren (1970), Nappi
& Streams (1970), Riek (1970), van Lenteren (1972, 1976), van Lenteren
& Bakker (1972, 1975, 1978), Samson-Boshuizen et al. (1974), Richards
(1977), Quinlan (1978), Chabora & Smolin (1979), Chabora et al.
(1979), Krombein et al. (1979), Diaz (1980), Veerkamp
(1980), Vet & van der Hoeven (1984), Vet & van Alphen (1985),
Subba-Rao & Hayat (1985), Quinlana (1986), Gauld & Bolton (1988), and
Goulet & Huber (1993). 31. Figites spp. (Hymenoptera: Cynipoidea: Figitidae) Largest segment of
abdomen (in lateral view) tergites II or III, and never more than 1 short
tergite preceding the large tergite (Fig. 44a-A). Mostly small insects; tergite II not
forming 1/2 the abdomen (Fig. 44a-A). They are solitary endophagous larval
parasitoids with separate species occurring in different geographic, but
rarely demonstrating high parasitization rates. Key references are Legner & Olton (1968b), and Legner et al.
(1967). 32. Hexacola (= Trybliographa) spp. (Hymenoptera: Cynipoidea:
Eucoilidae) Scutellum with
dorsal "cup"; pronotum pronounced, extending forward into an
anterior plate with a strong posterior margin (Fig. 43a-A); separate species
in different geographic areas. Attack
smaller species of Diptera (e.g., Chloropidae) at low parasitization
rates. Key references are James
(1928), Roberts (1935), Wishart & Monteith (1947), Jenni (1951), Simmonds
(1952), Wishart & Monteith (1954), Jorgenssen (1957), Mulla (1962),
Makarenko (1963, 1965), Legner & Bay (1964, 1965), Legner & Olton
(1969), Legner et al. (1966), Clausen et al
(1965), Eskafi & Legner (1974a,b,c), and Jones & Hassell (1988). Family Diapriidae (Hymenoptera: Proctotrupoidea) Antennae inserted
on middle of face (Fig. 48a-A & C). Fore wings without apparent stigma,
venation reduced with only a short marginal vein (Fig. 48a-B). The principal genera are Trichopria and Phaenopria. Phaenopria occidentalis Fouts (Fig. 48a-E) is parasitic on Hippelates spp. in California, while Trichopria spp. are parasitic on Hippelates spp. in the West Indies..
Key references are Thompson (1944), Sundholm (1964), Riek (1970), Richards
(1977), Fabritius (1979a), Krombein et
al. (1979), Teodorescu & Ursu
(1979), Nixon (1980), Borror et al. (1981), Subba-Rao & Hayat
(1985), Gauld & Bolton (1988) and Goulet & Huber (1993). 33. Trichopria spp. & Phaenopria spp. (Hymenoptera:
Diapriidae) Wings do not have
veins except for a short marginal vein and with a stigma so near the margin
that the stigmal vein is almost absent (Fig. 48a-A & B). The antennae usually arise from a small
platform in the middle of the face between the eyes (Fig. 48a-C). The femora and apical 1/2 of the tibiae
are swollen. The body is polished
black without ground sculpture and with scattered long setae. The size varies with that of the
host. Species of this genus are
usually solitary endophagous larval parasitoids. Key references are Muesebeck (1961), , Legner et al.
(1967); Legner & Olton (1968b).
Additional references are Cros (1935), Bailey (1947), Magnarelli &
Anderson (1980), Bradley et al. (1984), Morgan et al. (1990), and
Blanchot (1992a). = = = = = = = = = =
= = = = = = = = = = = = = = = REFERENCES: [Please refer to File: <fly-par.ref.htm>; & also to MELVYL
Library
] --------------------------------- NOTE: Illustrations were simplified, corrected and/or updated to
suit the present key. However, please refer to cited
authors for greater detail. |