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

Upcoming Events

Discussion of 2018 gathering

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

Photos of insects and people from the 2014 gathering in Virginia, June 4-7.

Photos of insects and people from the 2013 gathering in Arizona, July 25-28

Photos of insects and people from the 2012 gathering in Alabama

Photos of insects and people from the 2011 gathering in Iowa

Photos from the 2010 Workshop in Grinnell, Iowa

Photos from the 2009 gathering in Washington


Genus Acronicta - Dagger Moths

Henry's Marsh Moth (brown form) - Acronicta insularis Dagger? - Acronicta Leucania? - Acronicta insularis Which Moth? - Acronicta Delightful Dagger Moth - Acronicta spinigera Retarded Dagger Moth - Acronicta retardata Henry's Marsh Moth/Cattail Caterpillar Moth (Simyra insularis)  - Acronicta insularis American Dagger Moth - Hodges#9200 - 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)
Synonyms and other taxonomic changes
Acronicta Ochsenheimer, 1816
Acronycta Treitschke, 1825 (unjustified emendation)
Simyra Ochsenheimer, 1816 (1)
Explanation of Names
Generic epithet Acronicta is Greek meaning "the beginning of the night." (2)
There are more than 73 named species of the genus Acronicta in America north of Mexico. (3)
Several to be described.
Represented throughout North America. Also occurs in Eurasia.
This is a large and very difficult genus. With a few exceptions (e.g. vinnula, betulae, fallax), species-level identification should be left to experts.
Print References
Ochsenheimer, F. 1816. Die schmetterlinge von Europa: 81 (Simyra)
Internet References
pinned adult thumbnail images of 40 species occurring in eastern Canada (CBIF)
pinned adult thumbnail images of 36 species occurring in western Canada (CBIF)
Works Cited
1.Phylogenetic relationships of Acronictinae with discussion of the abdominal courtship brush in Noctuidae (Lepidoptera)
Jadranka Rota, Brigette V. Zacharczenko, Niklas Wahlberg, Reza Zahiri, B.C. Schmidt, and David L. Wagner. 2015. Systematic Entomology.
2.An accentuated list of the British Lepidoptera, with hints on the derivation of the names.
Anonymous. 1858. The Entomological Societies of Oxford and Cambridge.
3.Annotated check list of the Noctuoidea (Insecta, Lepidoptera) of North America north of Mexico.
Donald J. Lafontaine, B. Christian Schmidt. 2010. ZooKeys 40: 1–239 .