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Species Details
Onocosmoecus unicolor
University of Alberta E.H. Strickland Entomological Museum Read more about this collection »
SeasonalityAdults fly from early May to late September, peaking in August.
IdentificationAdult antennae are straw-yellow and the vertex of the head a dark straw-yellow. Sours are dark yellow. In males, the clasper articles are uniformly tapered distad. The tips are curved downward and have terminal, black, acuminate teeth (Nimmo, 1971).
Scientific Name
Onocosmoecus unicolor
Habitat
Ubiquitous. This species inhabits streams and possibly some lakes.
Seasonality
Adults fly from early May to late September, peaking in August.
Identification
Adult antennae are straw-yellow and the vertex of the head a dark straw-yellow. Sours are dark yellow. In males, the clasper articles are uniformly tapered distad. The tips are curved downward and have terminal,…
Adult antennae are straw-yellow and the vertex of the head a dark straw-yellow. Sours are dark yellow. In males, the clasper articles are uniformly tapered distad. The tips are curved downward and have terminal, black, acuminate teeth (Nimmo, 1971).
Life History
Annual. Pupate in June to October and adults will lay eggs in September.
Conservation
Very common.
Diet Info
Larvae are algae scrappers, shredders and detritovores.
Range
The range for this species extends from Alaska, east to the northeastern United States and south to New Mexico. In Alberta, this species can be found in the low mountain valleys to the plains (Nimmo, 1971).
Citation
Page Citation for Onocosmoecus unicolor
Page Citation
"Species Details - Onocosmoecus unicolor, University of Alberta E.H. Strickland Entomological Museum." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/g/2-3054/9-12070. Accessed 19 Jun. 2025.
References
Author
LaFontaine, Gary
Title
Caddisflies
Publication Date
1981
Pages
336
Author
Schmid, F.
Title
Genera of the Trichoptera of Canada and Adjoining or Adjacent United States.
Publication Date
1998
Pages
319
Specimen Information
There are 67 specimens of this Species.
UASM5092 - Onocosmoecus unicolor
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Ware Creek
Collected ByNimmo, A.
Date Collected1965-08-14
UASM5115 - Onocosmoecus unicolor
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Little Brule Creek
Collected ByNimmo, A.
Date Collected1966-09-09
UASM5088 - Onocosmoecus unicolor
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Crowsnest River
Collected ByNimmo, A.
Date Collected1967-08-12
UASM5104 - Onocosmoecus unicolor
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Banff National Park, Banff
Collected ByNimmo, A.
Date Collected1968-08-05
UASM5110 - Onocosmoecus unicolor
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Dead Man's Flats
Collected ByNimmo, A.
Date Collected1965-08-25
UASM5098 - Onocosmoecus unicolor
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Bow River
Collected ByNimmo, A.
Date Collected1966-07-26
UASM5103 - Onocosmoecus unicolor
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Bow River
Collected ByNimmo, A.
Date Collected1967-05-07
UASM5123 - Onocosmoecus unicolor
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Bow River
Collected ByNimmo, A.
Date Collected1967-07-29
UASM5109 - Onocosmoecus unicolor
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Bow River
Collected ByNimmo, A.
Date Collected1968-09-12
UASM5120 - Onocosmoecus unicolor
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Gorge Creek
Collected ByNimmo, A.
Date Collected1965-08-11
UASM5081 - Onocosmoecus unicolor
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Jasper National Park, Snaring River
Collected ByNimmo, A.
Date Collected1966-07-24
UASM5118 - Onocosmoecus unicolor
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Waterton Lakes National Park, Waterton
Collected ByNimmo, A.
Date Collected1965-08-19
UASM5116 - Onocosmoecus unicolor
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, North Saskatchewan River
Collected ByNimmo, A.
Date Collected1965-08-04
UASM5126 - Onocosmoecus unicolor
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Castle River
Collected ByNimmo, A.
Date Collected1965-08-14
UASM5093 - Onocosmoecus unicolor
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Jasper National Park, Ranger Creek
Collected ByNimmo, A.
Date Collected1966-09-10
UASM5100 - Onocosmoecus unicolor
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Sundance Creek camp
Collected ByNimmo, A.
Date Collected1967-08-05
UASM5114 - Onocosmoecus unicolor
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Lundbreck Falls
Collected ByNimmo, A.
Date Collected1968-08-04
UASM5086 - Onocosmoecus unicolor
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Banff National Park, Redearth Creek
Collected ByNimmo, A.
Date Collected1968-08-05
UASM5121 - Onocosmoecus unicolor
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Jasper National Park, Snaring River
Collected ByNimmo, A.
Date Collected1968-08-06
UASM5106 - Onocosmoecus unicolor
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Jasper National Park, Miette River
Collected ByNimmo, A.
Date Collected1968-08-21
UASM5122 - Onocosmoecus unicolor
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Waterton Lakes National Park, Cameron Lake
Collected ByNimmo, A.
Date Collected1965-08