Species Details
Glossosoma intermedium
University of Alberta E.H. Strickland Entomological Museum Read more about this collection »
SeasonalityAdults fly early May to late July.
IdentificationThe antennae of the adults are golden-brown and about two-thirds the length of the body. The basal annulus of the antennae is twice the length of the second annulus. Vertex of the head is uniform brown except for the paler warts and white sutures which originate from the warts. Median suture is dark brown to black. The clasper in the males is spoon-like (Nimmo, 1974).
Scientific Name
Glossosoma intermedium
Habitat
Small, moderately fast, smooth flowing creeks.
Seasonality
Adults fly early May to late July.
Identification
The antennae of the adults are golden-brown and about two-thirds the length of the body. The basal annulus of the antennae is twice the length of the second annulus. Vertex of the head is uniform brown except for…
The antennae of the adults are golden-brown and about two-thirds the length of the body. The basal annulus of the antennae is twice the length of the second annulus. Vertex of the head is uniform brown except for the paler warts and white sutures which originate from the warts. Median suture is dark brown to black. The clasper in the males is spoon-like (Nimmo, 1974).
Life History
Annual (?). Data not available.
Conservation
Uncommon.
Diet Info
Larvae feed on detritus, algae and diatoms.
Range
This is a holarctic species. In North America, the range extends from Illinois, west to British Columbia. In Alberta, it is known from the Plains and from the lower valleys of the mountains and foothills.
Citation
Page Citation for Glossosoma intermedium
Page Citation
"Species Details - Glossosoma intermedium, University of Alberta E.H. Strickland Entomological Museum." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/g/2-1053. Accessed 08 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 8 specimens of this Species.
UASM5221 - Glossosoma intermedium
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Smuland Creek
Collected ByNimmo, A.
Date Collected1967-07-02
UASM5216 - Glossosoma intermedium
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Blindman River
Collected ByNimmo, A.
Date Collected1968-07-20
UASM5217 - Glossosoma intermedium
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Baptiste Creek
Collected ByNimmo, A.
Date Collected1965-07-20
UASM5219 - Glossosoma intermedium
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Banff National Park, Taylor Creek
Collected ByNimmo, A.
Date Collected1967-06-15
UASM5218 - Glossosoma intermedium
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Two Creek
Collected ByNimmo, A.
Date Collected1967-07-01
UASM5220 - Glossosoma intermedium
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Jasper National Park, Athabasca Falls
Collected ByNimmo, A.
Date Collected1967-05-08
UASM5222 - Glossosoma intermedium
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, French Creek
Collected ByNimmo, A.
Date Collected1963-05-29
UASM6399 - Glossosoma intermedium
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, French Creek
Collected ByNimmo, A.
Date Collected1965-07-30