Freshwater-moth
Guides
Petrophila canadensis
Canadian petrophila moth, Canadian Petrophila
A small aquatic moth in the family Crambidae, described by Eugene G. Munroe in 1972. Adults have a wingspan of 11–18 mm and are active from May to September with two generations per year. The species is notable for its fully aquatic larval stage, which feeds on diatoms and algae in freshwater habitats. It overwinters as an adult.