Stoneflies of the United States

Stoneflies of Clark County, Washington

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

Capniidae

Subfamily Capniinae

Northwest Snowfly -- (Capnia melia)
Pacific Snowfly -- (Capnia promota)
Spined Snowfly -- (Mesocapnia projecta)
Scappoose Snowfly -- (Utacapnia imbera)

Peltoperlidae

Subfamily Peltoperlinae

Brown Roachfly -- (Yoraperla mariana)
Black Roachfly -- (Yoraperla nigrisoma)

Perlidae

Subfamily Acroneuriinae

Cascades Stone -- (Doroneuria baumanni)

Perlodidae

Subfamily Isoperlinae

Olympia Stripetail -- (Isoperla gravitans)

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