Species Exema canadensis

Classification · Explanation of Names · Numbers · Size · Identification · Range · Habitat · Print References · Works Cited

Chrysomelidae Neochlamisus gibbous - Warty leaf beetle? - Exema canadensis

Exema poss. neglecta? - Exema canadensis

Tiny, warty, dark beetle - Exema canadensis

Classification

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

Species canadensis (Exema canadensis)

Explanation of Names

Exema canadensis Pierce, 1940

Numbers

9 spp. n. of Mex. (1)

Size

2.4 to 2.7 mm (2)

Identification

Emargination of eyes black, not yellow. (2)

"Shiny black with yellowish markings; male with antennal scape and longitudinal bar next to each eye transversely connected to central spot that merges with triangular frontal spot, yellow; frontal slope black; all tibiae with subbasal and subapical yellow rings; front femora with basal yellow ring, female similar with facial yellow markings reduced to spots; pronotum with large elliptical punctures, largest posteriorly; elytra coarsely punctate with prominent umbone and large tubercules." (2)

Range

e NA (TX-FL-NS-MB) (1)

Habitat

Beaten and swept from species of Solidago, Corylus, Salix, Cornus, elm, chokecherry, blackberry, ragweed, and others. (2)

Print References

Karren, J. 1966. A revision of the genus Exema of America north of Mexico (Chrysomelidae, Coleoptera). University of Kansas Science Bulletin 46: 647–695.(3)

Pierce, W.D. 1940. The fauna and flora of the El Segundo sand dunes. II. The dune case-bearer beetles of the genus Exema with review of the genus. Bulletin, Southern California Academy of Sciences 39: 6-27.

Works Cited

1.	Catalog of Leaf Beetles of America North of Mexico Ed Riley, Shawn Clark, and Terry Seeno. 2003. Coleopterists Society.

2.	The Beetles of Northeastern North America, Vol. 1 and 2. Downie, N.M., and R.H. Arnett. 1996. The Sandhill Crane Press, Gainesville, FL.

3.	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 Cotinis on 14 October, 2006 - 6:55pm
Additional contributions by Bbarnd, Mike Quinn, Ben Coulter
Last updated 18 March, 2017 - 3:56pm

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