Species Details
Oecetis osteni
University of Alberta E.H. Strickland Entomological Museum Read more about this collection »
SeasonalityIn Illinois, adults can be found from mid-June to late August.
IdentificationAdults are various shades of brown without any conspicuous markings. Male tenth tergite is composed of a pair of fairly long arms. The arms are sclerotized and wide at the base narrowing to a curved apical beak (Ross, 1944).
Scientific Name
Oecetis osteni
Habitat
Standing and flowing waters.
Seasonality
In Illinois, adults can be found from mid-June to late August.
Identification
Adults are various shades of brown without any conspicuous markings. Male tenth tergite is composed of a pair of fairly long arms. The arms are sclerotized and wide at the base narrowing to a curved apical beak…
Adults are various shades of brown without any conspicuous markings. Male tenth tergite is composed of a pair of fairly long arms. The arms are sclerotized and wide at the base narrowing to a curved apical beak (Ross, 1944).
Diet Info
Larvae are predacious.
Range
Northeast from Minnesota, east to New Brunswick (Ross, 1944).
Citation
Page Citation for Oecetis osteni
Page Citation
"Species Details - Oecetis osteni, University of Alberta E.H. Strickland Entomological Museum." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/g/2-2342. Accessed 05 May. 2025.
References
Author
LaFontaine, Gary
Title
Caddisflies
Publication Date
1981
Pages
336
Author
Ross, Herbert, H.
Title
The caddis flies, or Trichoptera, of Illinois.
Publication Date
1944
Volume
23
Pages
326
Specimen Information
There is 1 specimen of this Species.
UASM5961 - Oecetis osteni
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Lake Sara
Collected ByNimmo, A.
Date Collected1963-07-06