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Species Details

Euxoa intrita

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

SeasonalityIn Alberta adults have been collected in late July and August. IdentificationA medium-size (3.1-3.5 cm wingspan) variable dark chocolate or dark red-brown moth frosted with pale scales. The ground varies from dark chocolate brown to mottled red-brown with black markings. The lower edge of the costa and the cubital vein, the space between the doubled antemedian and post median lines, and the outline of the reniform and orbicular spots are usually marked with contrasting light brown or whitish scales, giving the forewings a frosted look. In some specimens the median area is lighter red-brown. The hindwings are light smoky-brown with a broad diffuse terminal band, darker in females. The forewing fringe is dark, the hindwing fringe is light brown, and the male antennae are rather broadly biserrate. The forewings are broader than in most Euxoa, giving them a characteristic stubby-winged appearance. Males often have a small patch of orange scales at the forewing base (as in tessellata), and can also be recognized by the massive harpes and the stout, asymmetrical saccular extensions. Intrita belongs in the large subgenus Euxoa, characterized by the shape of the male vesica, which is 1-2 times the length of the aedoeagus, bends above the apex of the aedoeagus to project dorsally or to the right, and lacks a prominent twist, coil or loop subbasally. The valves are all bilaterally symmetrical except for the lengths of the saccular extensions. Keys to the subgenera and species and illustrations of the genitalia are provided in Lafontaine 1987.

Scientific Name Euxoa intrita Habitat Dry wooded coniferous forest; dry grassy clearings in the parklands. Seasonality In Alberta adults have been collected in late July and August. Identification
A medium-size (3.1-3.5 cm wingspan) variable dark chocolate or dark red-brown moth frosted with pale scales. The ground varies from dark chocolate brown to mottled red-brown with black markings. The lower edge of the…
A medium-size (3.1-3.5 cm wingspan) variable dark chocolate or dark red-brown moth frosted with pale scales. The ground varies from dark chocolate brown to mottled red-brown with black markings. The lower edge of the costa and the cubital vein, the space between the doubled antemedian and post median lines, and the outline of the reniform and orbicular spots are usually marked with contrasting light brown or whitish scales, giving the forewings a frosted look. In some specimens the median area is lighter red-brown. The hindwings are light smoky-brown with a broad diffuse terminal band, darker in females. The forewing fringe is dark, the hindwing fringe is light brown, and the male antennae are rather broadly biserrate. The forewings are broader than in most Euxoa, giving them a characteristic stubby-winged appearance. Males often have a small patch of orange scales at the forewing base (as in tessellata), and can also be recognized by the massive harpes and the stout, asymmetrical saccular extensions. Intrita belongs in the large subgenus Euxoa, characterized by the shape of the male vesica, which is 1-2 times the length of the aedoeagus, bends above the apex of the aedoeagus to project dorsally or to the right, and lacks a prominent twist, coil or loop subbasally. The valves are all bilaterally symmetrical except for the lengths of the saccular extensions. Keys to the subgenera and species and illustrations of the genitalia are provided in Lafontaine 1987.
Life History Known only from lab-reared material. The egg overwinters, and the larvae undergo a lengthy aestivation. Adults are attracted to light. Conservation A fairly common, widespread species; no concerns. Diet Info Unknown. Most related Euxoa are general feeders on low-growing mostly broad-leaved plants. Range
Intrita occurs across southern Canada from western Ontario west to the Pacific, south to southern Manitoba, central Montana and in the mountains to northern New Mexico, south-central Utah and south-central California.…
Intrita occurs across southern Canada from western Ontario west to the Pacific, south to southern Manitoba, central Montana and in the mountains to northern New Mexico, south-central Utah and south-central California. In Alberta it has been collected from the southern edge of the boreal forest to the Red Deer River badlands, west to the upper foothills.
Euxoa intrita
Euxoa intrita

Citation

Page Citation for Euxoa intrita

Page Citation

"Species Details - Euxoa intrita, University of Alberta E.H. Strickland Entomological Museum." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/g/2-4169/9-164119. Accessed 14 Dec. 2024.

References

Specimen Information

There are 97 specimens of this Species.

97 results plotted on map in 41 markers.
Note: Only records with latitude and longitude coordinates are plotted on map.

UASM17526 - Euxoa intrita

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Calgary Collected ByBowman, K. Date Collected1920-08-25

UASM17530 - Euxoa intrita

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Calgary Collected ByBowman, K. Date Collected1920-08-18

UASM17533 - Euxoa intrita

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Calgary Collected ByBowman, K. Date Collected1920-08-10

UASM17535 - Euxoa intrita

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Lethbridge Collected ByBowman, K. Date Collected1924-08-01

UASM17536 - Euxoa intrita

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Banff National Park, Banff Collected ByBowman, K. Date Collected1925-07-27

UASM17537 - Euxoa intrita

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Calgary Collected ByBowman, K. Date Collected1920-08-25

UASM17542 - Euxoa intrita

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Lethbridge Collected ByBowman, K. Date Collected1924-08-17

UASM17543 - Euxoa intrita

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Edmonton Collected ByBowman, K. Date Collected1937-08-03

UASM17544 - Euxoa intrita

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Banff National Park, Banff Collected ByBowman, K. Date Collected1926-08-06

UASM17545 - Euxoa intrita

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Lethbridge Collected ByBowman, K. Date Collected1924-08-18

UASM17547 - Euxoa intrita

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Edmonton Collected ByBowman, K. Date Collected1941-07-25

UASM17548 - Euxoa intrita

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Edmonton Collected ByBowman, K. Date Collected1936-08-12

UASM7248 - Euxoa intrita

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Tofield Collected BySchmidt, B. C. Date Collected1999-08-18

UASM7330 - Euxoa intrita

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Tofield Collected BySchmidt, B. C. Date Collected2000-08-02

UASM24586 - Euxoa intrita

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Edmonton Collected ByFuller, E. R. Date Collected1994-07-30

UASM24210 - Euxoa intrita

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Buffalo Lake Provincial Recreation Area Collected ByAnweiler, G. G. Date Collected2002-08-17

UASM24211 - Euxoa intrita

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Buffalo Lake Provincial Recreation Area Collected ByAnweiler, G. G. Date Collected2002-08-17

UASM24212 - Euxoa intrita

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Buffalo Lake Provincial Recreation Area Collected ByAnweiler, G. G. Date Collected2002-08-17

UASM34663 - Euxoa intrita

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Edgerton Collected ByAnweiler, G. G. Date Collected2003-08-06/2003-09-07

UASM34868 - Euxoa intrita

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Lethbridge Collected ByHobbs, G. A. Date Collected1945-08-17

BIRD8647 - Euxoa intrita

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Erskine Collected ByBird, C. D. Date Collected2000-07-26

Adult Seasonal Distribution