California Department of Fish and Wildlife
Aquatic Biological Assement

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Psychodidae Level 1 Level 2



Key Characters

"Moth flies", a.k.a. "drain flies." Body segments subivided into 2 or 3 sections, each w/ sclerotized dorsal plate. Posterior spiracles at the end of a short conical respiratory tube.

Tolerance generally 2-4, as high as 10 in some genera (Psychoda)
Distribution CA, OR, WA, AZ, Baja