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Genus Bassareus

Attacked at my computer by this ... this ANIMAL!  What it is, please? - Bassareus mammifer Bassareus clathratus Chrysomelidae, lateral - Bassareus lituratus Small red beetle - Bassareus mammifer Case-bearing Leaf Beetle - Bassareus mammifer - female Beetle - Bassareus mammifer Beetle - Bassareus Bassareus brunnipes
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 Cryptocephalini
Subtribe Cryptocephalina
Genus Bassareus
Explanation of Names
Bassareus Haldeman 1849
Greek bassaris 'fox'(1)
Numbers
8 spp., all in our area(2)(3)
Identification
front margin of the prothorax sinuous or hooked (unlike in Cryptocephalus), also described as "anterior edge of proepisternum laterally sinuous or toothed, in many specimens difficult to see" (4):
 

Note also "abdominal sternum 1 of male excavated in middle and with large spine on each side" (4):
 
Range
Nearctic genus: e. half of the US and adjacent Canada(2)
Remarks
Genus needs revision(2)
Works Cited
1.Composition of scientific words
Brown R.W. 1956. Smithsonian Institution Press, Washington, DC. 882 pp.
2.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.
3.Catalog of Leaf Beetles of America North of Mexico
Ed Riley, Shawn Clark, and Terry Seeno. 2003. Coleopterists Society.
4.Leaf and Seed Beetles of South Carolina
Janet Ciegler. 2007. Clemson University.