Limnephilus janus

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

SeasonalityAdults fly from mid-July to mid-September. IdentificationAdult antennae are pale yellow and the vertex of the head pale yellow-brown. Spurs are pale yellow. Forewings are grayish white with scattered brown areas. In males, the clasper is without a ventral base and there is a small, acuminate dorsal tooth on the extremity. Segment 10 processes, distal third are slender, curved dorsad and partly visible under the ventral edge of the cercus (Nimmo, 1971).

Scientific Name Limnephilus janus Habitat Large to small, shallow, Carex lake, ponds and sloughs. Seasonality Adults fly from mid-July to mid-September. Identification

Adult antennae are pale yellow and the vertex of the head pale yellow-brown. Spurs are pale yellow. Forewings are grayish white with scattered brown areas. In males, the clasper is without a ventral base and there is a small, acuminate dorsal tooth on the extremity. Segment 10 processes, distal third are slender, curved dorsad and partly visible under the ventral edge of the cercus (Nimmo, 1971).

Life History Annual? Conservation Not common. Diet Info Larvae are detritovores. Range This species has been recorded in Alberta, Saskatchewan, Minnesota and Colorado. In Alberta, it occurs in the plains and lower foothills (Nimmo, 1971).

Page Citation

"Species Details - Limnephilus janus, University of Alberta E.H. Strickland Entomological Museum." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/g/2-3094. Accessed 12 Apr. 2025.

References

10 results plotted on map in 9 markers.
Note: Only records with latitude and longitude coordinates are plotted on map.

UASM4803 - Limnephilus janus

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Island Lake Collected ByNimmo, A. Date Collected1965-07-20

UASM4802 - Limnephilus janus

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, White Gull Collected ByNimmo, A. Date Collected1965-07-20

UASM4804 - Limnephilus janus

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Crimson Lake Provincial Park, Crimson Lake Collected ByNimmo, A. Date Collected1965-08-07

UASM4800 - Limnephilus janus

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Snail Lake Collected ByNimmo, A. Date Collected1965-08-15

UASM4798 - Limnephilus janus

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Waterton Lakes National Park, Cameron Lake Collected ByNimmo, A. Date Collected1965-08-19

UASM4796 - Limnephilus janus

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Turner Valley Collected ByNimmo, A. Date Collected1965-08-23

UASM4797 - Limnephilus janus

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Turner Valley Collected ByNimmo, A. Date Collected1965-09-13

UASM4799 - Limnephilus janus

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Edmonton Collected ByBall, G. E. Date Collected1955-07-17

UASM4801 - Limnephilus janus

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Langdon Collected ByNimmo, A. Date Collected1966-07-27

UASM6419 - Limnephilus janus

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Elk Point Collected ByNimmo, A. Date Collected1966-07-12

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Species Details