Species Details

Euxoa idahoensis

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

SeasonalityAdults have been collected in Alberta in July and August. IdentificationE. idahoensis is a member of the detersa group in the subgenus Euxoa. They are rather robust, medium-size moths (3.2-3.5 cm wingspan) with charcoal brown or sooty brown forewings. The costa is light grey or grey brown and contrasts with the ground, especially over the basal half. There is a prominent black basal dash, and the area in the discal cell before the orbicular and between the orbicular and the reniform spot is black. The orbicular spot is prominent, usually open to and concolorous with the pale costa. The crescent shaped reniform is less contrasting and is finely outlined with black scales in most specimens. The normal lines are absent, except for traces of the subterminal line indicated by a few dark saggitate spots. The hindwings are sooty brown with a darker discal mark. They are very similar to E. castanea, with the chestnut of E. castanea replaced by charcoal brown in idahoenesis. Until recently (2000) "idahoensis" was comprised of what is now recognized as a group of at least 6 species, most of which are being described as new. True idahoensis is larger, darker, less streaked, has a larger orbicular, is more charcoal brown in color and has broader ovipositor lobes than the other 5 species. Because of this taxonomic confusion, previously published information regarding idahoensis may refer to any or all of the 6 species in the complex, including idahoensis. Bowman (1951) listed idahoensis as a subspecies of E. costata.

Scientific Name Euxoa idahoensis Habitat Dry woodlands in the foothills, mountains and grasslands region. Seasonality Adults have been collected in Alberta in July and August. Identification
E. idahoensis is a member of the detersa group in the subgenus Euxoa. They are rather robust, medium-size moths (3.2-3.5 cm wingspan) with charcoal brown or sooty brown forewings. The costa is light grey or grey brown…
E. idahoensis is a member of the detersa group in the subgenus Euxoa. They are rather robust, medium-size moths (3.2-3.5 cm wingspan) with charcoal brown or sooty brown forewings. The costa is light grey or grey brown and contrasts with the ground, especially over the basal half. There is a prominent black basal dash, and the area in the discal cell before the orbicular and between the orbicular and the reniform spot is black. The orbicular spot is prominent, usually open to and concolorous with the pale costa. The crescent shaped reniform is less contrasting and is finely outlined with black scales in most specimens. The normal lines are absent, except for traces of the subterminal line indicated by a few dark saggitate spots. The hindwings are sooty brown with a darker discal mark. They are very similar to E. castanea, with the chestnut of E. castanea replaced by charcoal brown in idahoenesis. Until recently (2000) "idahoensis" was comprised of what is now recognized as a group of at least 6 species, most of which are being described as new. True idahoensis is larger, darker, less streaked, has a larger orbicular, is more charcoal brown in color and has broader ovipositor lobes than the other 5 species. Because of this taxonomic confusion, previously published information regarding idahoensis may refer to any or all of the 6 species in the complex, including idahoensis. Bowman (1951) listed idahoensis as a subspecies of E. costata.
Life History No information available. Conservation A fairly common and widespread species. Diet Info No information available. Range
The extent of the range of idahoensis cannot be determined from the published literature, as what has been treated in the literature as idahoensis is now treated as a complex of at least 6 species, most of which have…
The extent of the range of idahoensis cannot be determined from the published literature, as what has been treated in the literature as idahoensis is now treated as a complex of at least 6 species, most of which have not yet been described. E. idahoensis occurs in Alberta in the foothills and mountains, as well as in wooded parts of the grasslands region. It is not known to occur east of Alberta.

Citation

Page Citation for Euxoa idahoensis

Page Citation

"Species Details - Euxoa idahoensis, University of Alberta E.H. Strickland Entomological Museum." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/g/2-4268. Accessed 14 Apr. 2024.

Authorship

Name Anweiler, G. G.
Role species page author
Date 2003-10-20

References

Specimen Information

There are 32 specimens of this Species.

32 results plotted on map in 16 markers.
Note: Only records with latitude and longitude coordinates are plotted on map.

UASM17808 - Euxoa idahoensis

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Nordegg Collected ByBowman, K. Date Collected1925-07-18

UASM24393 - Euxoa idahoensis

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Brown Creek Provincial Recreation Area Collected ByAnweiler, G. G. Date Collected1999-08-06/1999-08-08

UASM24394 - Euxoa idahoensis

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Brown Creek Provincial Recreation Area Collected ByAnweiler, G. G. Date Collected1999-08-06/1999-08-08

UASM24395 - Euxoa idahoensis

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Brown Creek Provincial Recreation Area Collected ByAnweiler, G. G. Date Collected1999-08-06/1999-08-08

UASM24396 - Euxoa idahoensis

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Brown Creek Provincial Recreation Area Collected ByAnweiler, G. G. Date Collected1999-08-06/1999-08-08

UASM24397 - Euxoa idahoensis

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Brown Creek Provincial Recreation Area Collected ByAnweiler, G. G. Date Collected1999-08-06/1999-08-08

UASM24398 - Euxoa idahoensis

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Brown Creek Provincial Recreation Area Collected ByAnweiler, G. G. Date Collected1999-08-06/1999-08-08

UASM77897 - Euxoa idahoensis

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Waterton National Park Collected ByPike, E. M. Date Collected2005-07-11

UASM111629 - Euxoa idahoensis

University of Alberta E.H. Strickland Entomological Museum

Place CollectedUnited States: Washington, Yakima county, Bethel Ridge Collected ByTroubridge, J. Date Collected1996-07-25

UASM111630 - Euxoa idahoensis

University of Alberta E.H. Strickland Entomological Museum

Place CollectedUnited States: Washington, Yakima county, Bethel Ridge Collected ByTroubridge, J. Date Collected1996-07-14

UASM111631 - Euxoa idahoensis

University of Alberta E.H. Strickland Entomological Museum

Place CollectedUnited States: Washington, Yakima county, Bethel Ridge Collected ByTroubridge, J. Date Collected1995-08-18

UASM111632 - Euxoa idahoensis

University of Alberta E.H. Strickland Entomological Museum

Place CollectedUnited States: Washington, Yakima county, Bethel Ridge Collected ByTroubridge, J. Date Collected1996-07-25

UASM111633 - Euxoa idahoensis

University of Alberta E.H. Strickland Entomological Museum

Place CollectedUnited States: Washington, Yakima county, Bethel Ridge Collected ByTroubridge, J. Date Collected1996-07-25

UASM111634 - Euxoa idahoensis

University of Alberta E.H. Strickland Entomological Museum

Place CollectedUnited States: Washington, Yakima county, Bethel Ridge Collected ByTroubridge, J. Date Collected1996-07-14

UASM111635 - Euxoa idahoensis

University of Alberta E.H. Strickland Entomological Museum

Place CollectedUnited States: Washington, Douglas county, Bridgeport Collected ByTroubridge, J. Date Collected2001-06-08

UASM111636 - Euxoa idahoensis

University of Alberta E.H. Strickland Entomological Museum

Place CollectedUnited States: Washington, Chelan county, Junior Point campground Collected ByTroubridge, J. Date Collected1997-08-06

UASM111637 - Euxoa idahoensis

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: British Columbia, Toby Creek Collected ByTroubridge, J. Date Collected1998-07-24

UASM111638 - Euxoa idahoensis

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: British Columbia, Toby Creek Collected ByTroubridge, J. Date Collected1998-07-24

UASM111639 - Euxoa idahoensis

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: British Columbia, Pavilion Mountain Collected ByTroubridge, J.; Hensel Date Collected2000-07-30

UASM111640 - Euxoa idahoensis

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: British Columbia, Oliver Collected ByTroubridge, J. Date Collected1996-06-30

UASM111641 - Euxoa idahoensis

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: British Columbia, Lillooet Collected ByTroubridge, J. Date Collected1997-07-04

Adult Seasonal Distribution