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Major
Families of Adult Predatory & Parasitic
Coleoptera:
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152a (27a, 51b, 54a & 73b). Head not prolonged into a beak; gular
sutures (= longitudinal sutures demarking sclerite on
ventral side of head) double, at least anteriorly and posteriorly
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152b. Head usually prolonged into a beak; gular sutures fused or lacking;
antennae not elbowed; elytra cover base of pygidium (= last dorsal segment
of abdomen) (Figs.A-C) (predators of Coccidae) ....... A ...... (Coleoptera) Anthribidae <Habits>;
<Adults> & <Juveniles>
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154a
(153a). Abdomen with 6 or more
visible sternites; antennae filiform
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154b. Abdomen with only 4 visible sternites; antennae very much
thickened apically, clavate or laminate (Fig.A) (predators of ants)... ..... A ....... (Coleoptera) Paussidae <Habits>;
<Adults>
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155a (154a). Eyes entire, not divided; antennae elongated, slender
......... (Coleoptera) Caraboidea)
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156a (155a). Metasternum with a distinct transverse suture demarking a
triangular antecoxal suture
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156b. Metasternum without a transverse
suture or antecoxal sclerite; body smooth and hard; hind legs
flattened and fringed with long hairs (Figs.A-C) (predators of aquatic arthropods)
...... A ......... (Coleoptera) Dytiscidae <Habits>; <Adults> & <Juveniles>
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157b. Antennae inserted on side of head between base of mandible
and eye; clypeus does not extend
laterally beyond base of antennae; most are dark, shiny and flattened (Figs.A-F)
(general predators) ......... (Coleoptera) Carabidae <Habits>; <Adults> & <Juveniles>
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158a
(153b). Antennae
usually not clubbed, but if so, segments are not lamellate
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159a
(158a). Hind
tarsi with 4 segments, front and middle tarsi with 5 segments
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159b. Hind tarsi with at least as many
segments as fore and middle tarsi
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160a
(159a). Front coxal cavities
closed behind
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160b. Front coxal cavities open behind
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161a (160a). Abdominal sternites freely movable (%% only; also refer to
couplet 182); abdomen tip
exposed beyond elytra; last tarsal segment elongated, others are short (Figs.A-D) (predators) ........ A ..,,, (Coleoptera) Rhizophagidae <Habits>; <Adults>
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162a
(160b). Head
very much and abruptly constricted behind eyes
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163a
(162a). Prothorax usually rounded
on sides, without a sharp lateral margin
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163b. Prothorax with a sharp lateral margin; body somewhat
humpbacked, with head bent down;
abdomen pointed apically, extending beyond tips of elytra (Figs.A-B) (may be predators) ....... .A ........ (Coleoptera) Mordellidae <Habits>; <Adults> & <Juveniles>
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164a
(163a). Base of prothorax
narrower than elytra
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166a
(159b). Maxillary palpi much
shorter than antennae
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167a
(166a). Elytra cover most of
abdomen, not short
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168a
(167a). Tarsi with 5 segments on
at least one pair of legs, usually on all legs
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168b. All tarsi with less than 5 segments
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169a
(168a). Abdomen with at least 6
sternites
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169b. Abdomen with 5 or less sternites
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170a
(169a). Front coxae conical, large and prominent
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171a
(170a). Abdomen with 6 sternites
visible
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171b. Abdomen with 7-8 sternites visible
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172a
(171a). Hind coxae not grooved
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173a
(172a). Hind coxae prominent, at
least internally
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175a (171b). Middle coxae touching each other
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176a (175a). Antennae inserted on the upper part of the front
or at the base of its anterior lobe.
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178a
(169b). Front coxae globular or transverse
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178b. Front coxae somewhat conical and
prominent
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179a
(178a). Front coxae transverse,
somewhat cylindrical
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179b. Front coxae globular
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180a
(179a). Hind coxae grooved to
receive femora.
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180b. Hind coxae flat, not grooved
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181a (180a). Front coxae without a distinctly separated
side piece; some species with enlarged hind femora (Figs.A-B) (general predators) ....... A ......... (Coleoptera) Helodidae
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182a
(180b). Tarsi somewhat dilated,
1st segment not shortened
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182b. Tarsi slender, the metatarsus very short; body oval or
elliptical; pronotum rather closely joined to base of elytra (Fig.A) (general predators) ..... A ....... (Coleoptera) Ostomatidae <Habits>; <Adults
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183b. Maxillae with both an inner and an outer lobe; abdomen tip
exposed beyond elytra; last tarsal
segment elongated, others are short (Fig.A) (also see couplet 160) .......... (Coleoptera) Rhizophagidae <Habits>; <Adults>
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184a
(179b). Prosternum
without a median process.
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184b. Prosternum prolonged behind into a median process that is
received into the mesosternum;
posterior corners of pronotum prolonged posteriorily into sharp points;
able to click and jump (Figs.A-C) (general
predators) ........ A ...... (Coleoptera) Elateridae <Habits>; <Adults>
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185a
(184a). Hind coxae not in contact
with each other, although they may be close together in some
species
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186a
(185a). Elytra entire, covering
the pygidium
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187a
(186a). Antennae with 10-11
segments; body flattened
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189a
(178b). Hind coxae dilated into
plates which are grooved to receive femora
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191a
(168b). Tarsi with 3 segments
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191b. Tarsi with 4 segments
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Major
Families of Adult Entomophagous Neuroptera:
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194a (16a, 49a, 50a, 68a, 71a & 84a). Head hypognathous (= head and mouthparts projecting downward);
hind wing not folded fan-like when at rest
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197a
(195a). Veins and usually cross
veins abundant; wings without whitish powder
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198a (197a). Large moth-like species; costal area of fore
wing not broad; head small and closely set on prothorax; antennae long, filiform (= thread-like), with 40-50
segments (Figs.A & C)
....... A …..... (Neuroptera) Ithonidae <Habits>; <Adults> & <Juveniles>
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198b. Not as previously described
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199a
(198b). Antennae never enlarged
apically, moniliform (= bead-like), filiform (= thread- like), or
rarely pectinate (= comb-like)
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199b. Antennae at least thickly cylindrical,
usually enlarged towards apex
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200a
(199a). Hind wings
not longer than fore wings, the 2 pairs similar in form and venation
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