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DIPTERA
(Derived from Schlinger & Doutt, 1964 by E. F. Legner)
(Email Contacts)
There are about 40
and 126 families of flies that contain entomophagous species and are listedin
the following key form. Several other
families contain entomophagous species but in comparatively low numbers. Three general types of dipterous wing
venation are noted in Fig. 34 of Schlinger & Doutt (1964), which are used
in the key to following families; Curran (1934) and above mentioned
references were also consulted:
[Refer to <Guide> for more illustrations & <Diptera> for order details]
Keys to
Adults of Important Families
of Entomophagous Diptera
DIPTERA <General Characteristics>; <Juveniles> [Latest Classification]
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1a. Antennae usually
longer than thorax; flagellum consisting of 6-39 similar free segments in addition to the 2 basal segments; anal
cell usually open; palpi elongate and usually comprising 4-5 segments; body usually aseptate
......... (Suborder Nematocera)
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1b. Antennae shorter
than thorax, usually with 3 segments, but terminal segment
may be distinctly ring-like, or bearing a distinct style or arista; anal
cell distinctly narrowed or closed, or absent; palpi short, usually with 1-2 segments, body often with setae,
bristles or spines ............ (Suborder Brachycera)
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2a. Wings without network
of fine folds or creases
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3a. Costa extends around
entire wing, occasionally weakened behind
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3b. Costa extends to or nearly to wing tip
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4a. Mesonotal suture
transverse (= at right angles to longitudinal axis), not V-shaped
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7a. Antennae inserted
below compound eyes close to oral margin ..........
Bibionidae
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9a. Empodium
pulvilliform, the three pads nearly equal
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9b. Empodium hair-like or absent
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10a. 3rd antennal segment compound, ring-like
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10b. 3rd
antennal segment simple, often bearing an elongated style or arista
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12a. Squamae small or
vestigial
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14a. Wing with 2 or more submarginal cells; anal cell distinctly longer than
second basal cell
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14b. Wing with 1 or no submarginal cells; anal cell shorter
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15a. Front hollowed
between eyes
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15b. Front not hollowed between eyes
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17a. Costa continuing
around the wing
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18a. Wing with 5 posterior cells
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18b. Wing with at most 4 posterior cells
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21a. Wing normal, not
rounded apically; wing venation normal
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22a. Spurious vein absent;
anal cell short, ends much before margin of wing
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23a. Frontal lunule
entirely absent
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23b. Frontal lunule present
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25a. Coxae close together
at base
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26a. 2nd antennal segment with a longitudinal seam along upper outer
edge which extends to the base (Calyptratae)
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26b. 2nd
antennal segment without such a seam (Acalyptratae)
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27a. Hypopleurae and
pteropleurae with 1 or more vertical rows of hairs
or bristles
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27b. Hypopleurae without
a vertical series of strong bristles below spiracle, or if present then
there is no row of bristles on pteropleura
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28a. Postscutellum little
developed, not convexly prominent
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28b. Postscutellum strongly developed in the form of a transverse
rounded ridge often projecting as far as apex of scutellum. .......... Tachinidae <Habits>; <Adults> & <Juveniles>
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30b. Scutellar suture interrupted in middle; fourth vein formed so
that apical cell is not narrowed at wing margin ......... (Scatophagidae) Cordyluridae <Habits>; <Adults>
& <Juveniles>
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31a. Costa entire, no
indication of a break near end of subcosta
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31b. Costa fractured just before end of
subcosta
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32a. First posterior cell not
strongly narrowed, or the abdomen short and broad
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35a. Costa broken only at
end of subcosta
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35b. Costa broken near humeral crossvein in
addition to the subcostal break
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37a. Arista present;
scutellum with rounded edge
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