California Department of Fish and Wildlife
Aquatic Biological Assement

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Leuctridae Level 1 Level 2

Leuctridae

 

Key Characters

Glossae and paraglossae subequal. Abdominal segments 1-7 divided by a membranous fold; lateral margins of abdomen as viewed from above do not appear zigzagged but are smooth. Hind wing pads parallel to the body. Cylindrical body form.
Tolerance 0
Distribution CA, OR, WA, NV