These pale flies never surpass 10 mm in length, and are sometimes are under 2 mm. The family is closely related to Mosquitoes but features wing scales only along the margins, and lacks a proboscis.
Antennae of females are simple, while in males they are plumose. Ocelli are absent in this family.
The common name refers to the predaceous larvae, which are transparent and thus difficult to see. The larvae live in aquatic habitats.
There are about 15 species in Chaoboridae in America North of Mexico, in genera Chaoborus, Eucorethra, and Mochlonyx.
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