Hexapoda mostly with wings, the wingless forms clearly degraded.
Fleas are wingless insects, with a laterally compressed body, small and indistinctly separated head, and short thick antennae situated in cavities somewhat behind and above the simple eyes, which are always minute and sometimes absent.
Starting with the kiwi and cassowary, people have got into the habit of confounding flightless with wingless conditions.
In the wingless female glow-worm (Lampyris, fig.
Spicuous and well-known feature of ants is the wingless condition of the " workers," as the specialized females, with undeveloped ovaries, which form the largest proportion of the population of ant-communities, are called.