
The dustywings, Coniopterygidae, are a family of Pterygota (winged insects) of the net-winged insect order (Neuroptera). About 460 living species are known. These tiny insects can usually be determined to genus with a hand lens according to their wing venation, but to distinguish species, examination of the genitals by microscope is usually necessary.
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The dustywings, Coniopterygidae, are a family of Pterygota (winged insects) of the net-winged insect order (Neuroptera). About 460 living species are known. These tiny insects can usually be determined to genus with a hand lens according to their wing venation, but to distinguish species, examination of the genitals by microscope is usually necessary.
==Description and ecology== In general habitus, the adults are quite unlike other net-winged insects. Because of their small size - wingspan is between 1.8 and 5 millimetres - and their translucent brownish wings usually covered with the namesake whitish dust of waxy scales, they may at first be mistaken for whiteflies (Aleyrodidae). But whiteflies are true bugs (Sternorrhyncha), which are only distantly related to net-winged insects. An easily perceived distinguishing feature to separate whiteflies from dustywings is, that like many other Neuroptera, dustywings carry their wings nearly side-by-side when at rest, whereas whiteflies carry them almost flat across the back. There are no more than two veins across the costal field, and few cross-veins in general - unique among the living net-winged insects, dustywings do not actually have the "net-winged" venation. Some Coniopterygidae, like the genus Conwentzia, have only vestigial hindwings; others, like Helicoconis females, are completely wingless.
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