Species Details
Glossosoma alascense
University of Alberta E.H. Strickland Entomological Museum Read more about this collection »
SeasonalityAdults fly between early May to late August.
IdentificationAdult antennae are pale reddish-brown and two thirds of the body in length, with the basal annulus more than twice the length of the second annulus. Both the vertex of the head and frons are deep reddish-brown with a black suture and pale warts. The process on segment 10 of males is visible. The process is long and thin, it curves dorsally and narrows to a point (Nimmo, 1974).
Scientific Name
Glossosoma alascense
Habitat
Turbulent mountain to smooth flowing plains streams and smaller gentler creeks.
Seasonality
Adults fly between early May to late August.
Identification
Adult antennae are pale reddish-brown and two thirds of the body in length, with the basal annulus more than twice the length of the second annulus. Both the vertex of the head and frons are deep reddish-brown with a…
Adult antennae are pale reddish-brown and two thirds of the body in length, with the basal annulus more than twice the length of the second annulus. Both the vertex of the head and frons are deep reddish-brown with a black suture and pale warts. The process on segment 10 of males is visible. The process is long and thin, it curves dorsally and narrows to a point (Nimmo, 1974).
Life History
Annual (?). Data not available.
Conservation
Common.
Diet Info
Larvae feed on detritus, algae and diatoms.
Range
The range of G. alascense extends from Alaska, south to Utah and from Montana to Oregon. In Alberta, it is primarily found in the mountains and foothills of the Rockies, with one record from the plains, at Edmonton.
Citation
Page Citation for Glossosoma alascense
Page Citation
"Species Details - Glossosoma alascense, University of Alberta E.H. Strickland Entomological Museum." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/g/2-1050. Accessed 09 May. 2024.
References
Author
Ross, Herbert H.
Title
Evolution and Classification of the Mountain Caddisflies.
Publication Date
1956
Pages
213
Author
Nimmo, A. P.
Title
The adult Trichoptera (Insecta) of Alberta and eastern British Columbia, and their post-glacial origins. II. The families Glossosomatidae and Philopotamidae.
Publication Date
1974
Series Title
Quaestiones Entomologicae
Volume
10
Pages
315-349
Specimen Information
There are 29 specimens of this Species.
UASM5211 - Glossosoma alascense
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Highwood River
Collected ByNimmo, A.
Date Collected1965-08-13
UASM5204 - Glossosoma alascense
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Athabasca River
Collected ByNimmo, A.
Date Collected1965-07-25
UASM5192 - Glossosoma alascense
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Whitehorse Creek
Collected ByNimmo, A.
Date Collected1967-05-21
UASM5202 - Glossosoma alascense
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Jasper National Park, Astoria River
Collected ByNimmo, A.
Date Collected1966-07-06
UASM5215 - Glossosoma alascense
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Bow River
Collected ByNimmo, A.
Date Collected1967-07-29
UASM5200 - Glossosoma alascense
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Bow River
Collected ByNimmo, A.
Date Collected1967-08-23
UASM5191 - Glossosoma alascense
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, North Saskatchewan River
Collected ByNimmo, A.
Date Collected1965-08-07
UASM5213 - Glossosoma alascense
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Jasper National Park, Whirlpool River
Collected ByNimmo, A.
Date Collected1967-05-22
UASM5193 - Glossosoma alascense
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Banff National Park, Redearth Creek
Collected ByNimmo, A.
Date Collected1967-06-15
UASM5189 - Glossosoma alascense
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Bow River
Collected ByNimmo, A.
Date Collected1967-07-16
UASM5190 - Glossosoma alascense
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Banff National Park, Redearth Creek
Collected ByNimmo, A.
Date Collected1967-07-16
UASM5194 - Glossosoma alascense
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Saskatchewan River Crossing
Collected ByNimmo, A.
Date Collected1967-05-22
UASM5195 - Glossosoma alascense
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Bow River
Collected ByNimmo, A.
Date Collected1966-07-26
UASM5196 - Glossosoma alascense
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Jasper National Park, Snaring River
Collected ByNimmo, A.
Date Collected1967-05-22
UASM5197 - Glossosoma alascense
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Bow River
Collected ByNimmo, A.
Date Collected1967-05-07
UASM5198 - Glossosoma alascense
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Bow River
Collected ByNimmo, A.
Date Collected1968-07-16
UASM5199 - Glossosoma alascense
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Bow River
Collected ByNimmo, A.
Date Collected1965-08-09
UASM5201 - Glossosoma alascense
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Jasper National Park, Verdant Creek
Collected ByNimmo, A.
Date Collected1966-07-06
UASM5203 - Glossosoma alascense
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Forestry Trunk Road
Collected ByNimmo, A.
Date Collected1967-07-03
UASM5205 - Glossosoma alascense
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Banff National Park, Ranger Creek
Collected ByNimmo, A.
Date Collected1967-06-15
UASM5206 - Glossosoma alascense
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Bow River
Collected ByNimmo, A.
Date Collected1967-06-15