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; order Diptera, suborder Nematocera)

Family of somewhat variable flies which has been subdivided by some authors into as many as five subgroups. The adults are, typically, robust flies with shorter legs and wings than those of other families of Nematocera. Their antennae have 8–16 bead-like segments and are usually shorter than the thorax. Wings are large, with prominent anterior veins. Males have holoptic eyes, and ocelli are present. The larvae live in soil, roots, or decaying vegetation. The larvae of some species are among the most primitive of all dipteran larvae, having 12 segments, a large head, well-developed mouth-parts, and no pseudopods. More than 700 species have been described.

Subjects: Zoology and Animal Sciences.

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