Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Beetles (Coleoptera) » Polyphaga » Series Cucujiformia » Longhorn and Leaf Beetles (Chrysomeloidea) » Leaf Beetles (Chrysomelidae) » Case-bearing Leaf Beetles (Cryptocephalinae) » Warty Leaf Beetles (Fulcidacini) » Exema

Genus Exema

Warty leaf beetle 10.06.17 (1) - Exema dispar Warty Leaf Beetle - Exema canadensis 160313C01 - Exema Warty leaf beetle - Exema dispar Unknown insect - Exema Chrysomelidae Neochlamisus gibbous - Warty leaf beetle? - Exema canadensis Beetle - Exema Exema conspersa? - Exema conspersa
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Polyphaga
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
Numbers
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
Size
2-3.5 mm (2)
Identification
Resemble caterpillar/mouse droppings.
Key to spp. in (2)
Range
across N. America(1)
Food
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.
Contributed by tom murray on 21 March, 2006 - 4:47pm
Additional contributions by Bbarnd, Mike Quinn, Ben Coulter, v belov, Tyler Hedlund
Last updated 29 January, 2022 - 4:21pm

Disclaimer: Dedicated naturalists volunteer their time and resources here to provide this service. We strive to provide accurate information, but we are mostly just amateurs attempting to make sense of a diverse natural world. If you need expert professional advice, contact your local extension office.

Contributors own the copyright to and are solely responsible for contributed content.
Click the contributor's name for licensing and usage information.
Everything else copyright © 2003-2024 Iowa State University, unless otherwise noted.

Bugguide is hosted by:

Plant Pathology, Entomology and Microbiology at Iowa State University logo