John and Jane and I were busy sorting out some caterpillars (see here
) which got me working on the cutworms. I'm starting this just help sort some of those cutworms out.. and to keep this in a form I can work on over time / edit.
I'm using the Golden Guide to Butterflies and Moths, 2002 (1)
and the Mid-Atlantic Guide to the Insects Pests and Beneficials of Corn, Soybean and Small Grains
by Virginia IPM. Other sites referenced are linked below.
/ Greasy Cutworm
(Agrotis ipsilon) is found throughout the US & Southern Canada
(Xestia dolosa) These looks a little like the yellow-striped except for more elongated triangles on the sides, it's much like the large yellow underwing and lesser yellow underwing from above, I'd guess.. from the side I think the lesser yellow has a more distinct yellow stripe. Some candidates
(Spaelotis clandestina) Throughout the US except the very southern regions, also throughout southern Canada and southern Alaska. Possible candidates
Pale-sided Cutworm (Agrotis malefida) found in the southern US.
Pale Western Cutworm
(Agrotis orthogonia) found in the western US, but not along the coastal states.
) - range is Canada to NJ and west to the Pacific.
1. Apamea devastator (glassy cutworm)
2. Apamea inficita
3. Apamea amputatrix (yellow-headed cutworm)
4. Apamea cogitata
Striped Garden Cutworm (Trichordestra legitima) found throughout most of the US
Pale-Banded Dart (Agnorisma badinodis) found throughout the US except the very southern regions, also throughout southern Canada and southern Alaska. Possible contenders
Dark-sided Cutworm (Euxoa messoria)
Striped Cutworm (Euxoa tessellata)
White Cutworm (Euxoa scandens)
More images UMN
more images iastate.edu
/ Cotton Cutworm (Spodoptera ornithogalli) Watch for the black triangular markings on each segment with yellow stripe just below and dark spot above the first abdominal segment.
Western Yellow-striped Armyworm (Spodoptera praefica) - West of the Rockies
(Spodoptera frugiperda) is found across the US except the Northwest
) found across the US and in Southwestern Canada.
Interestingly he Golden Guide shows this caterpillar to have a blue stripe just above the spiracles instead of brown as shown in the Oklahoma image. Nebraska image seen here
(Spodoptera exigua) is found across the US, except for the Northeast
The black spot above the second true leg is one of its field markings.
(Dargida diffusa) is found across the US, except in the Southeast. (I'll bet we have some images of these) Also see forestry images
. Final stage slightly resembles this one... not sure on the mottling.. maybe the second one is closer... and that could have been wheat.. as there was some hay that was growing down there.
(Euxoa auxiliaris) Most of the US except for about the eastern 1/3.
Other images found OKstate
(also shows pale western), and forestryimages.org
White Pine Cutworm (Xestia badicollis)
Western Bean Cutworm
Snowy Dart (Euagrotis illapsa)
Flame-shouldered Dart (Ochropleura implecta)
Other Similar Looking caterpillars
Clouded Locust Underwing
(Euparthenos nubilis) found in the northeastern 1/4 of the US & southeastern Canada
Possible candidates based on the drawing in the Golden Guide are
Large Yellow Underwing
) Might be confused with Yellow-striped Armyworm. Look for the lack of a large black spot on the first abdominal segment.
Lesser Yellow Underwing