LACEWING-FLY, the name given to neuropterous insects of the families Hemerobiidae and Chrysopidae, related to the ant-lions, scorpion-flies, &c., with long filiform antennae, longish bodies and two pairs of large similar richly veined wings. The larvae are short grubs beset with hair-tufts and tubercles. They feed upon Aphidae or “green fly” and cover themselves with the emptied skins of their prey. Lacewing-flies of the genus Chrysopa are commonly called golden-eye flies.