Wings triangular in shape. Abdomen with long cerci present. Hindwings about the same size as fore wings. Front region of forewing with few crossveins. Adults are small and grey or brown about 1 cm long.
Adults are larger.
Hind wing broader at the base than fore wings. Aquatic Invertebrates of Alberta. University of Alberta Press. Lehmkuhl, D.M. 1975. Field guide to aquatic insect families.