Species Details
Oecetis avara
Freshwater Invertebrate Collection Read more about this 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).
Scientific Name
Oecetis avara
Seasonality
In Illinois, adults can be found from June to early September.
Identification
Adults 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).
Diet Info
Larvae are predacious (Wiggins, 1996).
Range
British Columbia south to New Mexico and from Alaska east to Nova Scotia.
Citation
Page Citation for Oecetis avara
Page Citation
"Species Details - Oecetis avara, Freshwater Invertebrate Collection." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/g/5-2337. Accessed 16 Jan. 2025.
References
Author
LaFontaine, Gary
Title
Caddisflies
Publication Date
1981
Pages
336
Author
Wiggins, Glenn B.
Title
Larvae of the North American caddisfly genera (Trichoptera)
Publication Date
1996
Pages
457
Author
Ross, Herbert, H.
Title
The caddis flies, or Trichoptera, of Illinois.
Publication Date
1944
Volume
23
Pages
326
Specimen Information
There are 3 specimens of this Species.
IN3909 - Oecetis avara
Freshwater Invertebrate Collection
Place CollectedCanada: Alberta, Muskeg River (Undet.)
Collected ByA.O.S.E.R.P.
Date Collected1976-08-05
IN3910 - Oecetis avara
Freshwater Invertebrate Collection
Place CollectedCanada: Alberta, Athabasca River
Collected ByA.O.S.E.R.P.
Date Collected1977-06-21
IN3911 - Oecetis avara
Freshwater Invertebrate Collection
Place CollectedCanada: Alberta, Athabasca River
Collected ByA.O.S.E.R.P.
Date Collected1977-07-07