Species Details
Rhyacophila verrula
University of Alberta E.H. Strickland Entomological Museum Read more about this collection »
SeasonalityAdults fly from late August to mid-October.
IdentificationAdult antennae are dark brown with yellow scapes. The vertex of the head is dark brown antero-mesally, with the remainder of the head and warts, yellow. Dorso-posterior edge of segment 9 in males is developed as a short ventral lobe with a large, broad process curving downward. The posterior edge of tergum 8 has a median process and a pair of lateral 'wings' (Nimmo, 1971).
Scientific Name
Rhyacophila verrula
Habitat
Varies from swift, bouldery streams to smaller, shallower, pebbly creeks.
Seasonality
Adults fly from late August to mid-October.
Identification
Adult antennae are dark brown with yellow scapes. The vertex of the head is dark brown antero-mesally, with the remainder of the head and warts, yellow. Dorso-posterior edge of segment 9 in males is developed as a…
Adult antennae are dark brown with yellow scapes. The vertex of the head is dark brown antero-mesally, with the remainder of the head and warts, yellow. Dorso-posterior edge of segment 9 in males is developed as a short ventral lobe with a large, broad process curving downward. The posterior edge of tergum 8 has a median process and a pair of lateral 'wings' (Nimmo, 1971).
Conservation
Relatively common.
Diet Info
Larvae are phytophagous, feeding on algae, fresh aquatic plant leaves and mosses (LaFontaine, 1983).
Range
From Alaska, south to California and Colorado. In Alberta, this species is found in the high foothills and mountains (Nimmo, 1971).
Citation
Page Citation for Rhyacophila verrula
Page Citation
"Species Details - Rhyacophila verrula, University of Alberta E.H. Strickland Entomological Museum." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/g/2-3157. Accessed 14 Jan. 2025.
References
Author
LaFontaine, Gary
Title
Caddisflies
Publication Date
1981
Pages
336
Author
Nimmo, A. P.
Title
The adult Rhyacophilidae and Limnephilidae (Trichoptera) of Alberta and eastern British Columbia and their post-glacial origin.
Publication Date
1971
Series Title
Quaestiones Entomologicae
Volume
7
Pages
1-234
Specimen Information
There are 18 specimens of this Species.
UASM4283 - Rhyacophila verrula
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Banff National Park, Pipestone River
Collected ByNimmo, A.
Date Collected1966-10-04
UASM4287 - Rhyacophila verrula
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Dead Man's Flats
Collected ByNimmo, A.
Date Collected1967-09-24
UASM4291 - Rhyacophila verrula
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Dead Man's Flats
Collected ByNimmo, A.
Date Collected1967-09-24
UASM4289 - Rhyacophila verrula
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Banff National Park, Banff
Collected ByNimmo, A.
Date Collected1966-09-11
UASM4296 - Rhyacophila verrula
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Gorge Creek
Collected ByNimmo, A.
Date Collected1965-09-12
UASM4285 - Rhyacophila verrula
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Banff National Park, Redearth Creek
Collected ByNimmo, A.
Date Collected1966-10-04
UASM4297 - Rhyacophila verrula
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Jasper National Park, Fiddle River
Collected ByNimmo, A.
Date Collected1968-08-20
UASM4294 - Rhyacophila verrula
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Jasper National Park, Portal Creek
Collected ByNimmo, A.
Date Collected1968-09-11
UASM4290 - Rhyacophila verrula
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Banff National Park, Sundance Canyon
Collected ByNimmo, A.
Date Collected1968-09-12
UASM4284 - Rhyacophila verrula
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Dead Man's Flats
Collected ByNimmo, A.
Date Collected1966-09-13
UASM4286 - Rhyacophila verrula
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Elk Creek
Collected ByNimmo, A.
Date Collected1968-09-13
UASM4288 - Rhyacophila verrula
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Banff National Park, Moraine Creek
Collected ByNimmo, A.
Date Collected1966-10-04
UASM4292 - Rhyacophila verrula
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Banff National Park, Redearth Creek
Collected ByNimmo, A.
Date Collected1967-09-24
UASM4293 - Rhyacophila verrula
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Banff National Park, Redearth Creek
Collected ByNimmo, A.
Date Collected1967-08-23
UASM4295 - Rhyacophila verrula
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Banff National Park, Redearth Creek
Collected ByNimmo, A.
Date Collected1966-10-04
UASM6189 - Rhyacophila verrula
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Cabin Creek
Collected ByNimmo, A.
Date Collected1983-09-21
UASM264368 - Rhyacophila verrula
University of Alberta E.H. Strickland Entomological Museum
Place CollectedUnited States: Oregon, Wasco county, Mount Hood National Forest
Collected ByDombroskie, J.
Date Collected2007-07-26
UASM264381 - Rhyacophila verrula
University of Alberta E.H. Strickland Entomological Museum
Place CollectedUnited States: Oregon, Jefferson county, Deschutes National Forest
Collected ByDombroskie, J.
Date Collected2007-07-24