Species Details

Euxoa lewisi

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

Common NameOregon Dart SeasonalityIn Alberta adults have been collected in late July and August. IdentificationA medium-sized moth (FW length 14-19 mm) with grey-brown to red-brown forewings and smoky brown hindwings. The normal lines are obsolete, but there may be a dark diffuse median line in some specimens. The oval orbicular spot is almost as large as the reniform. The spots often have an incomplete buff line inside the outline. The area between the orbicular and the reniform is darker black or red-brown, and is the most prominent mark on the forewings. The male genitalia are characterized by the broad, almost bowl-shaped sacculus, saccular extensions almost conical and stouter than harpes and about 1/2 the length of the harpes. In similarly marked species the sacculus is narrower and crescentic and the saccular extensions are as thin as or thinner than the harpes.

Scientific Name Euxoa lewisi Common Name Oregon Dart Habitat Higher elevation montane and subalpine coniferous forest. Seasonality In Alberta adults have been collected in late July and August. Identification
A medium-sized moth (FW length 14-19 mm) with grey-brown to red-brown forewings and smoky brown hindwings. The normal lines are obsolete, but there may be a dark diffuse median line in some specimens. The oval…
A medium-sized moth (FW length 14-19 mm) with grey-brown to red-brown forewings and smoky brown hindwings. The normal lines are obsolete, but there may be a dark diffuse median line in some specimens. The oval orbicular spot is almost as large as the reniform. The spots often have an incomplete buff line inside the outline. The area between the orbicular and the reniform is darker black or red-brown, and is the most prominent mark on the forewings. The male genitalia are characterized by the broad, almost bowl-shaped sacculus, saccular extensions almost conical and stouter than harpes and about 1/2 the length of the harpes. In similarly marked species the sacculus is narrower and crescentic and the saccular extensions are as thin as or thinner than the harpes.
Life History Poorly known. The adults are nocturnal and come to light, and there is a single annual brood. Conservation No obvious concerns Diet Info Unknown Range
Another Euxoa species found in the western mountain coniferous forest. E. lewisi ranges from western Alberta across much of BC, south to the Cascades of eastern OR, central CO and UT. Ssp. juliae occurs in…
Another Euxoa species found in the western mountain coniferous forest. E. lewisi ranges from western Alberta across much of BC, south to the Cascades of eastern OR, central CO and UT. Ssp. juliae occurs in California. In Alberta, it has been taken in the mountains from Jasper National Park south to Calgary.

Citation

Page Citation for Euxoa lewisi

Page Citation

"Euxoa lewisi, University of Alberta E.H. Strickland Entomological Museum." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/g/2-4170. Accessed 27 Oct. 2021.

Taxonomic Hierarchy

Kingdom Animalia Phylum Arthropoda Class Hexapoda Subclass Insecta Order Lepidoptera Suborder Ditrysia Superfamily Noctuoidea Family Noctuidae Subfamily Noctuinae Genus Euxoa Species Euxoa lewisi
This hierarchy is created from our museum records, it may not always accurately reflect modern taxonomies.

Taxonomic Hierarchy for University of Alberta E.H. Strickland Entomological Museum