Rhyacophila autumnalis

University of Alberta E.H. Strickland Entomological Museum Read more about this collection »

SeasonalityAdults fly from late August to mid-September. IdentificationAdult antennae are uniform brown with the vertex of the head chocolate-brown. Warts and head sutures are deep yellow-brown. Spurs are dark brown except the fore-leg spurs which are straw-yellow. In males, the dorsum of segment 9 is long, postero-lateral edges are flanged and the posterior edge is developed as a prominent, upturned, rounded process (Nimmo, 1977).

Scientific Name Rhyacophila autumnalis Habitat Small, gravel or rocky subalpine creeks. Seasonality Adults fly from late August to mid-September. Identification

Adult antennae are uniform brown with the vertex of the head chocolate-brown. Warts and head sutures are deep yellow-brown. Spurs are dark brown except the fore-leg spurs which are straw-yellow. In males, the dorsum of segment 9 is long, postero-lateral edges are flanged and the posterior edge is developed as a prominent, upturned, rounded process (Nimmo, 1977).

Conservation Rare. Diet Info Larvae are probably predacious. Range Currently known from Alberta and Montana. In Alberta, it has been collected from Waterton National Park area (Nimmo, 1977).

Page Citation

"Species Details - Rhyacophila autumnalis, University of Alberta E.H. Strickland Entomological Museum." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/g/2-3140. Accessed 13 Apr. 2025.

References

1 result plotted on map in 1 marker.
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UASM327977 - Rhyacophila autumnalis

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Waterton Lakes National Park, Ruby Creek Collected ByDonald, D. B. Date Collected1975-08-24

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Species Details