Species Details

Euxoa westermanni

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

SeasonalityAlberta specimens have been collected from mid-July through the first week of August. IdentificationEuxoa westermanni is a medium-size Euxoa (FW length 15-17 mm) with dark red-brown, almost black, forewings with the basal two-thirds o the costa and the large orbicular and reniform spots contrasting pale rusty yellow-orange. The hindwings are sooty brown. The light rusty-orange center in the dark red-brown thorax is diagnostic. Euxoa westermanni is superficially most like E. castanea and E. idahoensis. In addition to genitalic differences it can be separated from castanea by the darker ground and the chestnut thorax, and from idahoensis by the smaller, less contrasting spots and the chestnut thorax.

Scientific Name Euxoa westermanni Habitat Open coniferous forest in the mountains, foothills and boreal forest. Seasonality Alberta specimens have been collected from mid-July through the first week of August. Identification
Euxoa westermanni is a medium-size Euxoa (FW length 15-17 mm) with dark red-brown, almost black, forewings with the basal two-thirds o the costa and the large orbicular and reniform spots contrasting pale rusty…
Euxoa westermanni is a medium-size Euxoa (FW length 15-17 mm) with dark red-brown, almost black, forewings with the basal two-thirds o the costa and the large orbicular and reniform spots contrasting pale rusty yellow-orange. The hindwings are sooty brown. The light rusty-orange center in the dark red-brown thorax is diagnostic. Euxoa westermanni is superficially most like E. castanea and E. idahoensis. In addition to genitalic differences it can be separated from castanea by the darker ground and the chestnut thorax, and from idahoensis by the smaller, less contrasting spots and the chestnut thorax.
Life History Poorly known. There is a single annual brood, with adults flying in mid-summer. Adults are nocturnal and come to light. The larvae are unknown. Conservation A rather uncommon and local species, but no obvious reasons for concern. Diet Info Like most Euxoa species, the larvae are likely generalists on a variety of herbs. Range
Euxoa westermanni has a northern distribution, ranging from southern Greenland and eastern Labrador west to Great Slave Lake and central Yukon, south in the Rocky Mountains to Lake Louise, and to near Calling Lake in…
Euxoa westermanni has a northern distribution, ranging from southern Greenland and eastern Labrador west to Great Slave Lake and central Yukon, south in the Rocky Mountains to Lake Louise, and to near Calling Lake in the boreal forest of central Alberta.
Euxoa westermanni
Euxoa westermanni

Citation

Page Citation for Euxoa westermanni

Page Citation

"Species Details - Euxoa westermanni, University of Alberta E.H. Strickland Entomological Museum." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/g/2-3877. Accessed 28 Mar. 2024.

Authorship

Name Anweiler, G. G.
Role species page author
Date 2003-11-21

References

Specimen Information

There are 33 specimens of this Species.

33 results plotted on map in 4 markers.
Note: Only records with latitude and longitude coordinates are plotted on map.

UASM17428 - Euxoa westermanni

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Nordegg Collected ByBowman, K. Date Collected1921-07-19

UASM17434 - Euxoa westermanni

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Nordegg Collected ByBowman, K. Date Collected1921-07-16

UASM17435 - Euxoa westermanni

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Nordegg Collected ByBowman, K. Date Collected1927-07-24

UASM17436 - Euxoa westermanni

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Nordegg Collected ByBowman, K. Date Collected1925-07-19

UASM17437 - Euxoa westermanni

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Nordegg Collected ByBowman, K. Date Collected1921-07-19

UASM17442 - Euxoa westermanni

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Nordegg Collected ByBowman, K. Date Collected1927-07-24

UASM17444 - Euxoa westermanni

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Nordegg Collected ByBowman, K. Date Collected1925-07-20

UASM17446 - Euxoa westermanni

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Nordegg Collected ByBowman, K. Date Collected1925-07-17

UASM17448 - Euxoa westermanni

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Nordegg Collected ByBowman, K. Date Collected1918-07-25

UASM17458 - Euxoa westermanni

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Nordegg Date Collected1921-07-20

UASM17464 - Euxoa westermanni

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Nordegg Collected ByBowman, K. Date Collected1921-07-18

UASM114240 - Euxoa westermanni

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: British Columbia, Pink Mountain Collected ByTroubridge, J. Date Collected1998-06-28

UASM114241 - Euxoa westermanni

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Banff National Park, Bow Pass Collected ByTroubridge, J. Date Collected1994-07-25

UASM114242 - Euxoa westermanni

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Manitoba, Churchill Collected ByHensel, H. Date Collected1996-07-29

UASM114243 - Euxoa westermanni

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Manitoba, Churchill Collected ByHensel, H. Date Collected1997-07-18

UASM114244 - Euxoa westermanni

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Manitoba, Churchill Collected ByHensel, H. Date Collected2001-07-12

UASM114245 - Euxoa westermanni

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Manitoba, Churchill Collected ByHensel, H. Date Collected1995-07-30

UASM114246 - Euxoa westermanni

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Manitoba, Churchill Collected ByHensel, H. Date Collected1995-07-29

UASM114247 - Euxoa westermanni

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Manitoba, Churchill Collected ByHensel, H. Date Collected1995-07-18

UASM114248 - Euxoa westermanni

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Manitoba, Churchill Collected ByHensel, H. Date Collected1995-07-21

UASM114249 - Euxoa westermanni

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Manitoba, Churchill Collected ByHensel, H. Date Collected2001-07-02

Adult Seasonal Distribution