Species Details

Euxoa vallus

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

SeasonalityAdults have been collected in Alberta from late July through early September. IdentificationA medium-size (3.7-4.1 cm wingspan) light yellow-grey or grey-brown moth, frequently with a scattering of yellow scaling in the basal area and around the spots. The antemedian, median and postmedian lines often appear smudged, and the orbicular and reniform are poorly marked or nearly obsolete, or indicated by a patch of yellowish scales. The postmedian line is separate from the median line, and scalloped at the veins. The fringe is concolorous with the rest of the forewing. The hindwings are light brown or grey, with a small discal bar and pale fringes. Similar to some specimens of E. comosa. Males can be separated by the shorter saccular extensions (2/3 the length of the harpes in vallus, as long or longer in comosa), and females by the absence of sclerotized processes on the apex of the ovipositor lobes (present in comosa). Euxoa vallus belongs to the subgenus Pleonectopoda, characterized by the prominent twist or subbasal coil in the vesica of the male. There are no characters that can be used to identify females as members of the subgenus. Keys to the subgenus and species are presented in Lafontaine, 1987.

Scientific Name Euxoa vallus Habitat Higher elevation coniferous forest and open subalpine, at or near treeline. Seasonality Adults have been collected in Alberta from late July through early September. Identification
A medium-size (3.7-4.1 cm wingspan) light yellow-grey or grey-brown moth, frequently with a scattering of yellow scaling in the basal area and around the spots. The antemedian, median and postmedian lines often appear…
A medium-size (3.7-4.1 cm wingspan) light yellow-grey or grey-brown moth, frequently with a scattering of yellow scaling in the basal area and around the spots. The antemedian, median and postmedian lines often appear smudged, and the orbicular and reniform are poorly marked or nearly obsolete, or indicated by a patch of yellowish scales. The postmedian line is separate from the median line, and scalloped at the veins. The fringe is concolorous with the rest of the forewing. The hindwings are light brown or grey, with a small discal bar and pale fringes. Similar to some specimens of E. comosa. Males can be separated by the shorter saccular extensions (2/3 the length of the harpes in vallus, as long or longer in comosa), and females by the absence of sclerotized processes on the apex of the ovipositor lobes (present in comosa). Euxoa vallus belongs to the subgenus Pleonectopoda, characterized by the prominent twist or subbasal coil in the vesica of the male. There are no characters that can be used to identify females as members of the subgenus. Keys to the subgenus and species are presented in Lafontaine, 1987.
Life History Poorly known. There is a single annual brood. Adults are attracted to light. The early stages are unknown. Conservation An uncommon or poorly collected species found in rather remote areas, no reasons for concern. Diet Info No data. Most members of the genus are general feeders on low-growing broad-leaved plants. Range
The nominate subspecies, which is the form that occurs in Alberta, is found in the mountains of southern Alberta, southern British Columbia and Washington. In Alberta it has been collected from the Bow valley north to…
The nominate subspecies, which is the form that occurs in Alberta, is found in the mountains of southern Alberta, southern British Columbia and Washington. In Alberta it has been collected from the Bow valley north to the Cardinal Divide.

Citation

Page Citation for Euxoa vallus

Page Citation

"Species Details - Euxoa vallus, University of Alberta E.H. Strickland Entomological Museum." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/g/2-3875. Accessed 24 Feb. 2024.

Authorship

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

References

Specimen Information

There are 47 specimens of this Species.

47 results plotted on map in 14 markers.
Note: Only records with latitude and longitude coordinates are plotted on map.

UASM17455 - Euxoa vallus

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Banff National Park, Lake Louise Collected ByBowman, K. Date Collected1921-08-30

UASM2055 - Euxoa vallus

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Cardinal Divide Collected ByAnweiler, G. G.; Schmidt, B. C. Date Collected2000-07-21

UASM78582 - Euxoa vallus

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Kakwa Wildland Provincial Park Collected ByMacaulay, D. Date Collected2006-07-21

UASM78584 - Euxoa vallus

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Kakwa Wildland Provincial Park Collected ByMacaulay, D. Date Collected2006-07-21

UASM78585 - Euxoa vallus

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Kakwa Wildland Provincial Park Collected ByMacaulay, D. Date Collected2006-07-21

UASM78587 - Euxoa vallus

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Kakwa Wildland Provincial Park Collected ByMacaulay, D. Date Collected2006-07-21

UASM113872 - Euxoa vallus

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: British Columbia, Gott Peak Collected ByTroubridge, J. Date Collected1996-08-23

UASM113873 - Euxoa vallus

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: British Columbia, Gott Peak Collected ByTroubridge, J. Date Collected1994-07-30

UASM113874 - Euxoa vallus

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: British Columbia, Gott Peak Collected ByTroubridge, J. Date Collected1996-08-23

UASM113875 - Euxoa vallus

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: British Columbia, Gott Peak Collected ByTroubridge, J. Date Collected1994-07-30

UASM113876 - Euxoa vallus

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: British Columbia, Gott Peak Collected ByTroubridge, J. Date Collected1994-07-30

UASM113877 - Euxoa vallus

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: British Columbia, Gott Peak Collected ByTroubridge, J. Date Collected1996-08-23

UASM113878 - Euxoa vallus

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: British Columbia, Gott Peak Collected ByTroubridge, J. Date Collected1994-07-30

UASM113879 - Euxoa vallus

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: British Columbia, Gott Peak Collected ByTroubridge, J. Date Collected2001-08-10

UASM113880 - Euxoa vallus

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: British Columbia, Gott Peak Collected ByTroubridge, J. Date Collected1996-08-23

UASM113881 - Euxoa vallus

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: British Columbia, Blowdown Pass Collected ByTroubridge, J. Date Collected1993-08-05/1993-08-06

UASM113882 - Euxoa vallus

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: British Columbia, Blowdown Pass Collected ByTroubridge, J. Date Collected1993-08-05/1993-08-06

UASM113883 - Euxoa vallus

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: British Columbia, Blowdown Pass Collected ByTroubridge, J. Date Collected1993-08-05/1993-08-06

UASM113884 - Euxoa vallus

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: British Columbia, Blowdown Pass Collected ByTroubridge, J. Date Collected1993-08-05/1993-08-06

UASM113885 - Euxoa vallus

University of Alberta E.H. Strickland Entomological Museum

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

UASM113886 - Euxoa vallus

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: British Columbia, Mount McLean Collected ByTroubridge, J. Date Collected1994-07-16

Adult Seasonal Distribution