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Species Details
Protoptila tenebrosa
University of Alberta E.H. Strickland Entomological Museum Read more about this collection »
SeasonalityAdults are flying from mid-June to early July.
IdentificationThe length of the dark-brown antennae on the adults is two-thirds of the bodylength. The basal 4th-5th flagelluar annuli are covered with dense hair. The vertex of the head and frons is chocolate brown, with a black median suture and white warts. The process on segment 10 of the males, has a sinuate slender dorsal hook. The ventral portion of the process is broad, directed postero-ventrad, with black hooks in the distal corners.
Scientific Name
Protoptila tenebrosa
Habitat
Medium rivers, slow and smooth with mud or sandy bottoms.
Seasonality
Adults are flying from mid-June to early July.
Identification
The length of the dark-brown antennae on the adults is two-thirds of the bodylength. The basal 4th-5th flagelluar annuli are covered with dense hair. The vertex of the head and frons is chocolate brown, with a black…
The length of the dark-brown antennae on the adults is two-thirds of the bodylength. The basal 4th-5th flagelluar annuli are covered with dense hair. The vertex of the head and frons is chocolate brown, with a black median suture and white warts. The process on segment 10 of the males, has a sinuate slender dorsal hook. The ventral portion of the process is broad, directed postero-ventrad, with black hooks in the distal corners.
Life History
Annual (?). Data unavailable.
Conservation
Uncommon.
Diet Info
Larvae feed on detritus, algae and diatoms.
Range
The range of P. tenebrosa extends from Michigan and Ontario to Arkansas, Idaho and Alberta. In Alberta, it can be found in the Great Plains portion of the province.
Citation
Page Citation for Protoptila tenebrosa
Page Citation
"Species Details - Protoptila tenebrosa, University of Alberta E.H. Strickland Entomological Museum." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/g/2-1058/9-11929. Accessed 22 Apr. 2025.
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 4 specimens of this Species.
UASM5258 - Protoptila tenebrosa
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, North Heart River
Collected ByNimmo, A.
Date Collected1967-07-01
UASM5260 - Protoptila tenebrosa
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Sturgeon River
Collected ByNimmo, A.
Date Collected1966-06-18
UASM5259 - Protoptila tenebrosa
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Blindman River
Collected ByNimmo, A.
Date Collected1967-06-25
UASM6406 - Protoptila tenebrosa
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Little Smoky River
Collected ByNimmo, A.
Date Collected1966-06-28
Adult Seasonal Distribution
- Specimens collected within a specified date range, but specimens collected at the same date and location are counted as one specimen.
- All specimens collected within a specified date range