Species Details
Hydropsyche vexa
University of Alberta E.H. Strickland Entomological Museum Read more about this collection »
SeasonalityAdults fly in late May to early August.
IdentificationThe male forewing and antennae are golden brown. The vertex is orange-brown and the thorax is orange-brown and yellowing laterally. Legs are pale brownish yellow with yellow spurs. The lateral membranous lobes of the male aedeagus are small and short, with a small black triangular spine that is pointed posterad. Tip of aedeagus has a long, cylindrical membranous lobe directed antero-ventrad, terminated by recessed spine cluster (Nimmo, 1987).
Scientific Name
Hydropsyche vexa
Habitat
Uncertain. Rivers.
Seasonality
Adults fly in late May to early August.
Identification
The male forewing and antennae are golden brown. The vertex is orange-brown and the thorax is orange-brown and yellowing laterally. Legs are pale brownish yellow with yellow spurs. The lateral membranous lobes of…
The male forewing and antennae are golden brown. The vertex is orange-brown and the thorax is orange-brown and yellowing laterally. Legs are pale brownish yellow with yellow spurs. The lateral membranous lobes of the male aedeagus are small and short, with a small black triangular spine that is pointed posterad. Tip of aedeagus has a long, cylindrical membranous lobe directed antero-ventrad, terminated by recessed spine cluster (Nimmo, 1987).
Life History
Annual(?) Unknown.
Conservation
Not common.
Diet Info
Larvae are omnivorous.
Range
Recorded from Alberta, south to Idaho, east across the prairies and New Brunswick.
Citation
Page Citation for Hydropsyche vexa
Page Citation
"Species Details - Hydropsyche vexa, University of Alberta E.H. Strickland Entomological Museum." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/g/2-1326. Accessed 19 Feb. 2025.
References
Author
LaFontaine, Gary
Title
Caddisflies
Publication Date
1981
Pages
336
Author
Nimmo, A. P.
Title
The adult Arctopsychidae and Hydropsychidae (Trichoptera) of Canada and adjacent United States.
Publication Date
1987
Series Title
Quaestiones Entomologicae
Volume
23
Pages
1-189
Specimen Information
There are 8 specimens of this Species.
UASM5762 - Hydropsyche vexa
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Killam
Collected ByPhilip, H.
Date Collected1974-07-27
UASM5763 - Hydropsyche vexa
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Three Hills
Collected ByPhilip, H.
Date Collected1976-08-02
UASM5767 - Hydropsyche vexa
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, French Creek
Collected ByNimmo, A.
Date Collected1976-06-06
UASM5764 - Hydropsyche vexa
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Edwand
Collected ByNimmo, A.
Date Collected1966-07-11
UASM5765 - Hydropsyche vexa
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Blindman River
Collected ByNimmo, A.
Date Collected1967-06-25
UASM5766 - Hydropsyche vexa
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Edwand
Collected ByNimmo, A.
Date Collected1967-08-07
UASM6490 - Hydropsyche vexa
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Edwand
Collected ByNimmo, A.
Date Collected1966-07-11
UASM6491 - Hydropsyche vexa
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Edwand
Collected ByNimmo, A.
Date Collected1966-07-11