Species - Oecetis avara

Taxonomic Hierarchy for Freshwater Invertebrate Collection


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Oecetis avara

Freshwater Invertebrate Collection

SeasonalityIn Illinois, adults can be found from June to early September. IdentificationAdults are straw yellow to light brown. Forewings have numerous dark spots in the membrane. Male claspers are large, vertical and pinched at half length, with the distal half roughly semi-circular (Ross, 1944).

Taxonomic Hierarchy for Freshwater Invertebrate Collection