Key to common families of insects in the Niagara region
43a) Body oval and extremely flat. Head completely concealed from dorsal view. PSEPHENIDAE 43b) Body elongate. Head visible from dorsal view. ELMIDAE Return to Couplet 41 Return to BioMAP Central
43b) Body elongate. Head visible from dorsal view. ELMIDAE Return to Couplet 41 Return to BioMAP Central
