VCSU Macro-Invertabrate Lab
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Order Diptera - The Moth Flies
Distinguishing characteristics - The body segments are the most distinguishing feature of Psychodidae. Unlike other Diptera, the body segments are all subdivided into two or three parts some of which may have dorsal plates (Fig. B). There is a complete head capsule (Fig. C). The prothorax does not have prolegs (Fig. D). The abdomen also lacks prolegs, except possibly on the last segment (Fig. E).

Genus - Pericoma

Tolerance Value - 4

Feeding Group - Collector

Notes - Genus Pericoma: The only genus of moth fly that we've collected in North Dakota rivers and streams is Pericoma. It can be found at the area where flowing water meets still water on the edges of streams and sometimes in the still areas themselves.

Psychodidae generally live at the edges of streams and ponds, sometimes in floating algae or moss. They do not build cocoons. In general the moth fly larvae feed on microorganisms and organic material. The adult moth flies are nocturnal and rest during the day. The adults are generally found in wooded areas near streams.

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