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Species Euxoa detersa - Rubbed Dart - Hodges#10838

Small moth on seaside goldenrod - Euxoa detersa Small moth on seaside goldenrod - Euxoa detersa Noctuidae: Euxoa detersa? - Euxoa detersa Noctuidae: Euxoa detersa? - Euxoa detersa Noctuidae: Euxoa detersa? - Euxoa detersa Noctuidae: Euxoa detersa? - Euxoa detersa Noctuidae: Euxoa detersa - Euxoa detersa Rubbed Dart? - Euxoa detersa
Show images of: caterpillars · adults · both
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Lepidoptera (Butterflies and Moths)
No Taxon (Moths)
Superfamily Noctuoidea
Family Noctuidae (Owlet Moths)
Subfamily Noctuinae (Cutworm or Dart Moths)
Tribe Noctuini
Subtribe Agrotina
Genus Euxoa
Species detersa (Rubbed Dart - Hodges#10838)
Hodges Number
10838
Other Common Names
Sandhill Cutworm (larva)
Sand Cutworm (larva)
Numbers
2 subspecies: E. d. detersa and E. d. personata listed at All-Leps
Size
wingspan 30-35 mm (1)
larvae to 34 mm
Identification
Adult: forewing yellowish to dark brown, dark specimens tinted with gray; lines double, white-edged; orbicular and reniform spots whitish with dark brown outlines, and dots in their centers; hindwing dark brown (1)
E. d. detersa typical form has pale strip along costa of forewing, and dark shading between reniform and orbicular spots (see example from Maryland); another form from Canada and the Great Lakes lacks the pale strip and is more uniformly colored (see example at CBIF)

Larva: body white to pale gray; pulsations in blood vessel along back can be seen through cuticle; faint chalky-white stripes on back and sides; head dull reddish-brown
[description by U. of Illinois]
Range
Newfoundland to North Carolina, west to Nebraska, north to Alberta and Northwest Territories
Covell's Guide (1) gives a southern limit of South Carolina but there are no Euxoa species on this list from Furman U. nor this list from the Dominick Collection in South Carolina
Habitat
sandy habitats: beaches, river shores, dunes, sandy agricultural fields, dry grasslands
adults visit flowers such as goldenrod during the day, and come to light at night
Season
adults fly from July to October
Food
larvae feed on corn, grasses, cranberry, saltwort, sea-rocket, various garden crops and commercial grains
Life Cycle
one generation per year; overwinters as a partially-grown larva
Remarks
Larvae construct subterranean burrows to feed on underground portions of host plants, and can be very destructive in fields planted in sandy soils.

"The commonest autumn dart to be found supping nectar from flower in the daytime." (Comment by David Beadle)
Internet References
live adult images by various photographers, plus common name reference [Rubbed Dart] (Moth Photographers Group)
live adult images probably of detersa on goldenrod and sunflower (Insects of Cedar Creek, Minnesota)
pinned adult image by John Glaser, plus habitat and dates (Larry Line, Maryland)
pinned adult images and photos of related species by Jim Vargo (Moth Photographers Group)
pinned adult image by G.G. Anweiler and flight season chart (Strickland Entomological Museum, U. of Alberta)
pinned adult images and collection site map (All-Leps)
description of subspecies; PDF doc and discussion of similar species (James McDunnough, 1949, American Museum of Natural History)
common name reference [Sandhill Cutworm] plus larva description and behavior (U. of Illinois)
common name reference [Sand Cutworm] (Entomological Society of Canada)
habitat; PDF doc and presence in Northwest Territories (Govt. of Alberta)
presence in North Carolina in dry dune habitats, and reference to subspecies E. d. detersa (U. of North Carolina)
presence in Nebraska; citation (Crop Profile for Sunflowers in Nebraska, ipmcenters.org)
distribution in Canada list of provinces and territories (U. of Alberta, using CBIF data)
Works Cited
1.Field Guide to Moths of Eastern North America
Charles V. Covell, Jr. 2005.