California Department of Fish and Wildlife
Aquatic Biological Assement

California Digital Reference Collection Home | Family Level | Level 1 Taxonomy | Level 2 Taxonomy

Jump to:

Ephemeroptera Odonata Plecoptera Hemiptera Megaloptera Neuroptera Trichoptera Lepidoptera Coleoptera Diptera Non-Insects

Baetidae Level 1 Level 2



Key Characters

Labrum with a median notch on distal margin (in Nearctic, only absent in Apobaetis), terminal filament variable, may be shorter than tergum 10 or subequal to cerci. Antennae variable, can be 2-3 times or more than the width of the head, or shorter than width of head. Maxillae without pectinate spines, abdominal gills variable.

Variable, from 2-9
CA, OR, WA, NV, AZ, Baja