These insects characteristically have large rounded heads covered mostly by well-developed, compound eyes, which provide good vision, legs that facilitate catching prey (other insects) in flight, two pairs of long, transparent wings that move independently, and elongated abdomens. They have three ocelli and short antennae. The mouthparts are on the underside of the head and include simple chewing mandibles in the adult.
These insects characteristically have large rounded heads covered mostly by well-developed compound eyes which provide good vision legs that facilitate catching prey (other insects) in flight two pairs of long transparent wings that move independently and elongated abdomens They have three ocelli and short antennae The mouthparts are on the underside of the head and include simple chewing mandibles in the adult