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 18 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.
UASM4274 - Rhyacophila vao
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Waterton Lakes National Park, Coppermine Creek
Collected ByNimmo, A.
Date Collected1968-08-01
UASM6467 - Rhyacophila vao
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Waterton Lakes National Park, Bauerman Brook
Collected ByDonald, D. B.
Date Collected1975-08-06
UASM6468 - Rhyacophila vao
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Waterton Lakes National Park, Cameron Creek
Collected ByDonald, D. B.
Date Collected1975-08-22
UASM6537 - Rhyacophila vao
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Vicary Creek
Collected ByNimmo, A.
Date Collected1967-07-29
UASM6539 - Rhyacophila vao
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Fred Creek
Collected ByNimmo, A.
Date Collected1976-09-25
UASM6540 - Rhyacophila vao
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Coat Creek
Collected ByNimmo, A.
Date Collected1967-07-29
UASM6536 - Rhyacophila vao
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Whitney Creek
Collected ByNimmo, A.
Date Collected1976-07-31
UASM264366 - Rhyacophila vao
University of Alberta E.H. Strickland Entomological Museum
Place CollectedUnited States: Utah, Box Elder county, Sawtooth National Forest
Collected ByDjernaes, M.
Date Collected2007-07-06
UASM264369 - Rhyacophila vao
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
UASM264370 - Rhyacophila vao
University of Alberta E.H. Strickland Entomological Museum
Place CollectedUnited States: California, Sierra National Forest
Collected ByDjernaes, M.
Date Collected2007-07-10
UASM264372 - Rhyacophila vao
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Whitehorse Creek
Collected ByDjernaes, M.
Date Collected2007-08-06
UASM264377 - Rhyacophila vao
University of Alberta E.H. Strickland Entomological Museum
Place CollectedUnited States: California, Mono county, Inyo National Forest
Collected ByRoe, A.; Lumley, L.
Date Collected2007-07-08
UASM264384 - Rhyacophila vao
University of Alberta E.H. Strickland Entomological Museum
Place CollectedUnited States: California, Siskiyou county, Klamath National Forest
Collected ByDombroskie, J.
Date Collected2007-07-23
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