SeasonalityNo information available.IdentificationAdult antennae are dark red-brown and the vertex of the head dark red-brown with paler warts. Spurs dark red-brown and the formula is 1, 3, 4. In males, the clasper is composed of a right-triangular ventral base only and without a dorsal process (Nimmo, 1977).
Scientific NameLenarchus keratusHabitat
No information available.
Seasonality
No information available.
Identification
Adult antennae are dark red-brown and the vertex of the head dark red-brown with paler warts. Spurs dark red-brown and the formula is 1, 3, 4. In males, the clasper is composed of a right-triangular ventral base…
Adult antennae are dark red-brown and the vertex of the head dark red-brown with paler warts. Spurs dark red-brown and the formula is 1, 3, 4. In males, the clasper is composed of a right-triangular ventral base only and without a dorsal process (Nimmo, 1977).
Life History
Annual?
Conservation
Rare.
Diet Info
Larvae are detritovores.
Range
This species has been recorded from southern Quebec, near the vicinity of Lake Superior and northwestern Alberta (Nimmo, 1977).
Citation
Page Citation for Lenarchus keratus
Page Citation
"Species Details - Lenarchus keratus, University of Alberta E.H. Strickland Entomological Museum." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/g/2-3080. Accessed 22 Sep. 2025.
References
AuthorNimmo, A. P.
TitleThe adult Trichoptera (Insecta) of Alberta and eastern British Columbia, and their post-glacial origins. I. The families Rhyacophilidae and Limnephilidae. Supplement 1.
Publication Date1977
Series TitleQuaestiones Entomologicae
Volume13
Pages25-67
Specimen Information
There is 1 specimen of this Species.
1 result plotted on map in 1 marker. Note: Only records with latitude and longitude coordinates are plotted on map.