Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Clickable Guide
Moths Butterflies Flies Caterpillars Flies Dragonflies Flies Mantids Cockroaches Bees and Wasps Walkingsticks Earwigs Ants Termites Hoppers and Kin Hoppers and Kin Beetles True Bugs Fleas Grasshoppers and Kin Ticks Spiders Scorpions Centipedes Millipedes


Species Acronicta americana - American Dagger Moth - Hodges#9200

American Dagger Moth? - Acronicta americana Caterpillar ID - Acronicta americana Final instar A. americana? - Acronicta americana Unknown Caterpillar - Acronicta americana Large caterpillar found in oak tree - Acronicta americana white, fuzzy caterpillar - Acronicta americana Catipillar invasion - Acronicta americana
Show images of: caterpillars · adults · both
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Lepidoptera (Butterflies and Moths)
Superfamily Noctuoidea (Owlet Moths and kin)
Family Noctuidae (Owlet Moths)
Subfamily Acronictinae
Genus Acronicta (Dagger Moths)
Species americana (American Dagger Moth - Hodges#9200)
Hodges Number
Synonyms and other taxonomic changes
Acronicta americana Harris, 1841
Apatela Americana
Common throughout the East (1)
Wingspan 50-65 mm (1)
Caterpillar to 50 mm (2 in) (2)

Caterpillar is densely covered with white or yellow hairs (early and middle instars more yellow), with pairs of diverging thin black lashes on A1 and A3 (first and third abdominal segments), a single tuft of black hairs on A8. Head smooth and shiny black. (3)
East of the Rockies (4)
Woodlands and forests, especially mesic to swampy bottomlands
Flies April to September (1)
Caterpillar seen June to October (5)
Larvae feed on leaves of alder, ash, birch, elm, hickory, maple, oak, poplar, walnut, willow (1) and other deciduous trees (4).
The largest dagger moth in the East, according to Covell. (1)
The caterpillar's hairs can cause skin irritation.
Internet References
adult images (Larry Line, Maryland)
pinned adult image (A.W. Thomas, Canadian Forest Service)
Owlet Caterpillars of Eastern North America - habitat, larva description
Works Cited
1.Field Guide to Moths of Eastern North America
Charles V. Covell, Jr. 2005.
2.Peterson First Guide to Caterpillars of North America
Amy Bartlett Wright. 1998. Houghton Mifflin Company.
3.Caterpillars of Eastern North America
David L. Wagner. 2005. Princeton University Press.
4.The Moth Book
W.J. Holland. 1968. Dover.
5.Caterpillars of Eastern Forests
David L. Wagner, Valerie Giles, Richard C. Reardon, Michael L. McManus. 1998. U.S. Dept of Agriculture, Forest Health Technology Enterprise Team.