Claire Weiss' Online Dicotomous Insect Identification Key

Insects with wings



Cockroaches and other members of the order Blattodea have wings.  Above their abdomens are two pair of leathery, scleritized (hardened) wings.
Earwigs, the insects that make up the Dermaptera order have very small, skin-like flaps for their forwings (hense the name dermapter, skin-wing) which cover the folded-up hind wings.
True bugs (hemipterans) have leathery tegmina as forwings that cross over their membranous hind wings and backs.  These count as wings also.  
Praying Mantises and related mantodea also have wings.  The forwings have been modified into long, partially hardened protective layers to cover the membranous hind wings.
Butterflies and moths, the insects that make up the lepidoptera family have very noticeably, often brightly colored, scale-covered wings.
Grasshoppers, katydids, crickets and other orthopterans have wings that work in much the same way as mantises.  The front wing is ridgid and protects the membranous hind wing.

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