; order Diptera, suborder Cyclorrapha)
Small family of true flies which are often hairy or bristly, and somewhat flattened. The antennae are often held in hollows, and the post-vertical bristles are convergent. The legs may be bristly, or woolly with pre-apical bristles. These flies are usually associated with the sea-shore, as their larvae feed on rotting seaweed on the strand-line. Some species make short mass migrations, and may also be attracted to aromatic chemicals. Only 48 species have been described.
Subjects: Zoology and Animal Sciences.