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Genus Acalymma

Striped Cucumber Beetle - Acalymma vittatum Acalymma trivittatum Beetle - Acalymma vittatum Yellow and Black Beetle (Lema sp.?) - Acalymma vittatum Western Striped Cucumber Beetle? - Acalymma trivittatum Acalymma vinctum (LeConte) - Acalymma vinctum Acalymma vinctum? - Acalymma vinctum Cucumber Beetle? - Acalymma vittatum
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 (Long-horned and Leaf Beetles)
Family Chrysomelidae (Leaf Beetles)
Subfamily Galerucinae (Skeletonizing Leaf Beetles and Flea Beetles)
Tribe Luperini
Subtribe Diabroticina
No Taxon (Section Diabroticites)
Genus Acalymma
Explanation of Names
Acalymma Barber 1947
Greek a 'without' + calymma 'covering, veil'
6 spp. in our area, >70 spp. total(1)
5-6.5 mm
distinctive 3 dark stripes and closely spaced rows of punctures on the elytra(2)

For ID: The third antennomere (antennal "segment") is small and not more than 1.5 times the length of the second antennomere in Diabrotica. In Acalymma, the third antennomere is large and at least twice as long as the second antennomere and about as long as the fourth, fide Ciegler (2007) (3) per email with Arthur Evans.
hosts: larvae of most spp. on Cucurbitaceae, A. peregrinum on Solanaceae; adults frequent wide variety of flowers(1)
A. vittatum and A.trivittata are pests of cucumber plants
Internet References
Fact sheet - Virginia Cooperative Extension
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.Peterson Field Guides: Beetles
Richard E. White. 1983. Houghton Mifflin Company.
3.Leaf and Seed Beetles of South Carolina
Janet Ciegler. 2007. Clemson University.