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, insects and people from the 2018 BugGuide Gathering in Virginia, July 27-29

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 Euclidia

8731 Euclidea cuspidea - Euclidia cuspidea Euclidia cuspidea Moth? - Euclidia cuspidea Unknown Moth - Euclidia cuspidea Toothed Somberwing Moth - Euclidia cuspidea Euclidia ardita Moth - Euclidia cuspidea moth - Euclidia cuspidea
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 Erebidae
Subfamily Erebinae
Tribe Euclidiini
Genus Euclidia
Synonyms and other taxonomic changes
Euclidia Ochsenheimer, 1816
Ectypa Billberg, 1820
Callistege Hübner, [1823]
Gonospileia Hübner, [1823]
Euclidimera Hampson, 1913
* includes Callistege, designated a subgenus of Euclidia in Goater, Ronkay & Fibiger, 2003.
Explanation of Names
Generic epithet Euclidia is a tribute to the Greek mathematician, Euclid. (1)
5 species in North America.
All of United States plus Canada from New Brunswick to British Columbia and Northwest Territories. 3 species (diagonalis, intercalaris, triangula) are restricted to the southwestern United States - Arizona to Texas.
Print References
Goater, B., L. Ronkay & M. Fibiger. 2003. Catocalinae and Plusiinae. Noctuidae Europaeae. Volume 10. 452 pp. [links to book: 1, 2]
Ochsenheimer, F. 1816. Die schmetterlinge von Europa 4: 96
Internet References
pinned adult images of ardita and cuspidea (CBIF)
pinned adult images of 4 species by Jim Vargo: cuspidea, diagonalis, intercalaris, triangula, the last 3 labeled as Callistege (Moth Photographers Group)
pinned adult images of 3 former Callistege species, with red arrows pointing to distinguishing features (Bruce Walsh, Moths of Southeastern Arizona)
taxonomic history plus list of world species, distribution maps, links to images, references (Markku Savela, FUNET)
distribution in Canada list of provinces and territories for 2 species (U. of Alberta, using CBIF data)
Works Cited
1.An accentuated list of the British Lepidoptera, with hints on the derivation of the names.
Anonymous. 1858. The Entomological Societies of Oxford and Cambridge.