Stoneflies of the United States

Stoneflies of Powell County, Montana

Species denoted with an asterisk (*) are unconfirmed or dubious records.

Capniidae

Subfamily Capniinae

Wine Snowfly -- (Mesocapnia oenone)

Leuctridae

Subfamily Leuctrinae

Summit Needlefly -- (Paraleuctra vershina)

Subfamily Megaleuctrinae

Giant Needlefly -- (Megaleuctra stigmata stigmata)

Nemouridae

Subfamily Amphinemurinae

Colorado Forestfly -- (Malenka coloradensis)
Twisted Forestfly -- (Malenka flexura)

Subfamily Nemourinae

Delicate Forestfly -- (Podmosta delicatula)
Common Forestfly -- (Zapada cinctipes)
Columbian Forestfly -- (Zapada columbiana)

Chloroperlidae

Subfamily Chloroperlinae

Margined Sallfly -- (Plumiperla diversa)
Autumn Sallfly -- (Suwallia autumna)
Pale Sallfly -- (Suwallia dubia)
Lined Sallfly -- (Suwallia lineosa)
Yellow Sallfly -- (Suwallia pallidula)
Alberta Sallfly -- (Sweltsa albertensis)
Colorado Sallfly -- (Sweltsa coloradensis)
Mountain Sallfly -- (Sweltsa fidelis)

Subfamily Paraperlinae

Longhead Sallfly -- (Kathroperla perdita)

Perlidae

Subfamily Acroneuriinae

Golden Stone -- (Hesperoperla pacifica)

Perlodidae

Subfamily Isoperlinae

Western Stripetail -- (Isoperla fulva)
Waterton Stripetail -- (Isoperla fusca)
Colorado Stripetail -- (Isoperla sobria)

Subfamily Perlodinae

Alberta Springfly -- (Setvena bradleyi)
American Springfly -- (Skwala americana)
Curved Springfly -- (Skwala curvata)
Smooth Springfly -- (Kogotus nonus)
Nearctic Springfly -- (Diura knowltoni)

Pteronarcyidae

Subfamily Pteronarcyinae

Least Salmonfly -- (Pteronarcella badia)

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