Species Details
Rhyacophila vao
University of Alberta E.H. Strickland Entomological Museum Read more about this collection »
SeasonalityAdults fly from mid-July to late September.
IdentificationAdult antennae are deep yellow-brown with pale annular sutures. The vertex of the head is dark brown anteriorly, paling posteriorly. Segment 9 in males, dorsal-posterior edge is not developed posterad. The basal article of the clasper is deeply indented on the ventral edge (Nimmo, 1977).
Scientific Name
Rhyacophila vao
Habitat
Smaller, gravel or small boulder hill creeks.
Seasonality
Adults fly from mid-July to late September.
Identification
Adult antennae are deep yellow-brown with pale annular sutures. The vertex of the head is dark brown anteriorly, paling posteriorly. Segment 9 in males, dorsal-posterior edge is not developed posterad. The basal…
Adult antennae are deep yellow-brown with pale annular sutures. The vertex of the head is dark brown anteriorly, paling posteriorly. Segment 9 in males, dorsal-posterior edge is not developed posterad. The basal article of the clasper is deeply indented on the ventral edge (Nimmo, 1977).
Life History
This species can tolerate warmer and siltier habitats than other members from Rhyacophila, commonly found in the lower reaches of costal creeks and rivers in the United States (LaFontaine, 1983).
Conservation
Common.
Diet Info
Larvae are probably predacious.
Range
Alaska, south to Montana and Oregon. In Alberta, this species is largely confined to the foothills, with one record in Swan Hills as well (Nimmo, 1977).
Citation
Page Citation for Rhyacophila vao
Page Citation
"Species Details - Rhyacophila vao, University of Alberta E.H. Strickland Entomological Museum." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/g/2-3156. Accessed 14 Apr. 2025.
References
Author
LaFontaine, Gary
Title
Caddisflies
Publication Date
1981
Pages
336
Author
Nimmo, A. P.
Title
The adult Trichoptera (Insecta) of Alberta and eastern British Columbia, and their post-glacial origins. I. The families Rhyacophilidae and Limnephilidae. Supplement 1.
Publication Date
1977
Series Title
Quaestiones Entomologicae
Volume
13
Pages
25-67
Specimen Information
There are 34 specimens of this Species.
UASM4280 - Rhyacophila vao
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Eunice Creek
Collected ByAlberta Fish and Wildlife
Date Collected1974-07-19
UASM4278 - Rhyacophila vao
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Chickadee Creek
Collected ByNimmo, A.
Date Collected1967-07-22
UASM4268 - Rhyacophila vao
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Waterton Lakes National Park, Cameron Creek
Collected ByNimmo, A.
Date Collected1965-08-19
UASM4262 - Rhyacophila vao
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Cataract Creek
Collected ByNimmo, A.
Date Collected1976-07-31
UASM4277 - Rhyacophila vao
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Waterton Lakes National Park, Rowe Brook
Collected ByNimmo, A.
Date Collected1965-08-19
UASM4276 - Rhyacophila vao
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Lusk Creek
Collected ByNimmo, A.
Date Collected1967-07-29
UASM4275 - Rhyacophila vao
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Waterton Lakes National Park, Rowe Brook
Collected ByNimmo, A.
Date Collected1968-08-01
UASM4279 - Rhyacophila vao
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Waterton Lakes National Park, Bertha Lake
Collected ByNimmo, A.
Date Collected1968-08-01
UASM4281 - Rhyacophila vao
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Waterton Lakes National Park, Galwey Brook
Collected ByNimmo, A.
Date Collected1975-09-11
UASM4263 - Rhyacophila vao
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Pincher Creek
Collected ByNimmo, A.
Date Collected1976-09-04
UASM4260 - Rhyacophila vao
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Cold Creek
Collected ByNimmo, A.
Date Collected1975-07-20
UASM4261 - Rhyacophila vao
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Pincher Creek
Collected ByNimmo, A.
Date Collected1976-07-31
UASM4264 - Rhyacophila vao
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Waterton Lakes National Park, Galwey Brook
Collected ByNimmo, A.
Date Collected1976-07-31
UASM4265 - Rhyacophila vao
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Lynx Creek
Collected ByNimmo, A.
Date Collected1976-07-17
UASM4266 - Rhyacophila vao
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Ernst Creek
Collected ByNimmo, A.
Date Collected1976-07-31
UASM4267 - Rhyacophila vao
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Waterton Lakes National Park, Rowe Brook
Collected ByNimmo, A.
Date Collected1967-08-12
UASM4269 - Rhyacophila vao
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Lusk Creek
Collected ByNimmo, A.
Date Collected1966-07-15
UASM4270 - Rhyacophila vao
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Waterton Lakes National Park, Bauerman Brook
Collected ByNimmo, A.
Date Collected1968-08-02
UASM4271 - Rhyacophila vao
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Waterton Lakes National Park, Coppermine Creek
Collected ByNimmo, A.
Date Collected1976-07-31
UASM4272 - Rhyacophila vao
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, James River
Collected ByNimmo, A.
Date Collected1976-07-17
UASM4273 - Rhyacophila vao
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Coat Creek
Collected ByNimmo, A.
Date Collected1976-07-31