A Rhyacophilan Caddisfly - Rhyacophila unimaculata
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British Columbia endemic (Nimmo, 1977; Nimmo and Scudder, 1978; 1979; 1984; Scudder, 1996) in Robson and Fernie. Also in western Montana in Crane Creek, Flathead Lake, and Roy's Creek, Lake County (Newell and Potter, 1975).
Observations in Montana Natural Heritage Program Database
Number of Observations:
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(Observations spanning multiple months or years are excluded from time charts)
This Rhyacophila species seems to prefer the small forested streams along the east side of Flathead Lake and potentially a few other similar streams in Lake and Sanders County. These steep-gradient, shaded, mossy cobble and woody rivulet streams fit the description of many habitats of our most narrowly restricted caddisflies.
Most Rhyacophila species are predators feeding mostly on aquatic insects, especially midges and blackflies
Limited data and the inability to identify larval collections has lead to a low global rank. Distribution data for U.S. states and Canadian provinces is known to be incomplete or has not been reviewed for this taxon.
- Literature Cited AboveLegend: View Online Publication
- Nimmo, A.P. 1977. The adult Trichoptera (Insecta) of Alberta and eastern British Columbia, and their post-glacial origins. II. The families Glossosomatidae and Philopotamidae. Supplement 1. Quaestioned Entomologicae 13: 69-71.
- Nimmo, A.P. and G.G.E. Scudder. 1978. An annotated checklist of the Trichoptera (Insecta) of British Columbia. Syesis 11: 117-134.
- Nimmo, A.P. and G.G.E. Scudder. 1979. An annotated checklist of the Trichoptera (Insecta) of British Columbia. Syesis 11(1978): 117-133.
- Nimmo, A.P. and G.G.E. Scudder. 1983. Supplement to an annotated checklist of Trichoptera (Insecta) of British Columbia. Syesis 16: 71-83.
- Scudder, G.G.E. 1996. Terrestrial and freshwater invertebrates of British Columbia: priorities for inventory and descriptive research. Research Branch British Columbia Ministry of Forests Research Program, and Wildlife Branch, British Columbia Ministry of Environment, Lands and Parks. Victoria, British Columbia, Working Paper 09/1996.206 pp.
- Additional Sources of Information Related to "Insects"