177a (176a). Head almost completely covered by prothorax; many species with
illuminescent
organs (Figs.A-B) (predators of
snails)................................................(Coleoptera) Lampyridae
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A
B
177b. Head not at all covered by prothorax; no light producing organs
(Figs.A-C) (general
predators)..............................................................................…….....................(Coleoptera) Cantharidae
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A B C
177c. Head not covered by prothorax, adult females often wingless
& luminescent (Figs.A-B)
(glow worms; larvae predaceous on
other arthropods).....……..............(Coleoptera) Phenogodidae
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A B