THE XERCES SOCIETY FOR INVERTEBRATE CONSERVATION

Aquatic Invertebrates in Pacific Northwest Freshwater Wetlands
An Identification Guide and Educational Resource

This family is not common in wetlands; they tend to live in larger streams and rivers with sandy bottoms. In North America, there are two genera in the family. Lachlania filters filamentous algae from the current in sandy bottomed rivers of the Northwest, while Homoeoneuria tends to live in the slack waters of large rivers, but is found mostly in the southern US (in the Southwest as far north as Utah).

The larvae are large and minnow-like, with a fringe of long hairs on the inner edges of their front legs.