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

Interested in a 2022 BugGuide gathering in New Mexico?

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

National Moth Week 2020 photos of insects and people.

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

Discussion, 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

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

Previous events


Arizonensis group

Red & Black Casebearer in California - Cryptocephalus sanguinicollis Cryptocephalus a. arizonensis Schaeffer - Cryptocephalus arizonensis Small Black Beetle - Cryptocephalus sanguinicollis Small Casebearer - Cryptocephalus nigrocinctus Cryptocephalus? - Cryptocephalus nanus Cryptocephalus nigrocinctus Suffrian - Cryptocephalus nigrocinctus Another black beetle - Cryptocephalus sanguinicollis Cryptocephalus sanguinicollis? - Cryptocephalus sanguinicollis
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Polyphaga (Water, Rove, Scarab, Long-horned, Leaf and Snout Beetles)
No Taxon (Series Cucujiformia)
Superfamily Chrysomeloidea (Longhorn and Leaf Beetles)
Family Chrysomelidae (Leaf Beetles)
Subfamily Cryptocephalinae (Case-bearing Leaf Beetles)
Tribe Cryptocephalini
Subtribe Cryptocephalina
Genus Cryptocephalus
No Taxon Arizonensis group
5 spp. (arizonensis, nanus, nigrocinctus, sanguinicollis, pallidicinctus)(1)
se. & w. NA(1)(2)
1 eastern sp. (C. nanus, WV-FL-MS-AR)
3 western spp.: C. sanguinicollis (BC-MT-CA; Mexico), C. arizonensis (AZ to TX), and C. pallidicinctus (CA)
C. nigrocinctus introduced to FL from Puerto Rico (Thomas et al. 1999)
Works Cited
1.A review of the genus Cryptocephalus in America north of Mexico (Chrysomelidae: Coleoptera).
White, R.E. 1968. USNM Bulletin 290. 124 pp.
2.Catalog of Leaf Beetles of America North of Mexico
Ed Riley, Shawn Clark, and Terry Seeno. 2003. Coleopterists Society.