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i.d. needed, black cockroach with huge wings


Keith
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  • 2 months later...

Sorry for the late reply but I thought I should add it anyways. This is a male (Compsodes mexicanus), a primitive blattarian member of the family Corydiidae (previously Polyphagidae); subfamily Tiviinae. Related genera include Austropolyphaga from Australia and Anacompsa from Africa. These are among the few genera of modern roaches that retained the presence of a "pseudovein" that runs diagonally from the radial veins up towards the costals on both forewings. Blattopteran "roachoids" and the earliest mantids also exhibited this feature as well. Fossil evidence shows that as roaches became less flight dependent during the late Jurassic from increased scleratization of the tegmina, they began losing this characteristic. Most tiviid females are apterous. Very cool find and beautiful photos!

Mark

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