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

See Moth submissions from National Moth Week 2023

Photos of insects and people from the 2022 BugGuide gathering in New Mexico, July 20-24

Photos of insects and people from the Spring 2021 gathering in Louisiana, April 28-May 2

Photos of insects and people from the 2019 gathering in Louisiana, July 25-27

Photos of insects and people from the 2018 gathering in Virginia, July 27-29

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

Previous events


Species Euxoa riversii - Hodges#10868

Euxoa sp.? - Euxoa riversii
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 Noctuinae (Cutworm or Dart Moths)
Tribe Noctuini
Subtribe Agrotina
Genus Euxoa
No Taxon (Subgenus Orosagrotis)
No Taxon (wilsoni group)
Species riversii (Euxoa riversii - Hodges#10868)
Hodges Number
Synonyms and other taxonomic changes
Carneades perexcellens var. riversii Dyar, 1903
Forewing length: 17-21 mm. (1)
This species is the southern counterpart of E. wilsoni and can be distinguished from that species by its paler coloration and genital characteristics. It has similar forms to wilsoni. Essentially, most riversii specimens look like bleached wilsoni. In general, riversii is larger and has narrower forewings than does wilsoni. (1)
Coastal southern California from Los Angeles County southward to San Diego; it also occurs on the Channel Islands as far north as San Miguel Island. (1)
Adults have been collected from early May to early August. (1)
See Also
Print References
Lafontaine, J. D., 1987. Moths of America North of Mexico, Fascicle 27.2: p. 155; pl. 8.58-60 (1)