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

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

National Moth Week was July 23-31, 2022! See moth submissions.

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


Genus Exema

Goldenrod fauna - Exema Warty Leaf Beetle  - Exema Exema Warty Leaf Beetle  - Exema canadensis - female small worm-looking critter that appears to burrow upright on joe-pye weed leaf - Exema Fulcidacini - Exema Exema? - Exema Exema? - Exema
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 Fulcidacini (Warty Leaf Beetles)
Genus Exema
Explanation of Names
Exema Lacordaire 1848
9 spp. in our area(1)(2):
byersi Karren (NY-VA-AL to MI-KS-TX-AZ)
canadensis Pierce
conspersa (Mannerheim)
deserti Pierce sw. US (CO-NV to TX-CA) into Mexico
dispar Lacordaire
elliptica Karren
gibber (Fabricius) s. US (PA-FL-TX); often on oaks
mormona Karren
neglecta Blatchley
2-3.5 mm (2)
Resemble caterpillar/mouse droppings.
Key to spp. in (2)
across N. America(1)
Most of our spp. associated with Asteraceae(1)
Works Cited
1.American Beetles, Volume II: Polyphaga: Scarabaeoidea through Curculionoidea
Arnett, R.H., Jr., M. C. Thomas, P. E. Skelley and J. H. Frank. (eds.). 2002. CRC Press LLC, Boca Raton, FL.
2.A revision of the genus Exema of America, north of Mexico (Chrysomelidae, Coleoptera)
J.B. Karren. 1966. University of Kansas Science Bulletin, 46:647-695.