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Species Zabrotes spectabilis

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 Bruchinae (Pea and Bean Weevils)
Tribe Amblycerini
Genus Zabrotes
Species spectabilis (Zabrotes spectabilis)
Explanation of Names
Zabrotes spectabilis Horn 1885
Size
0.7–1.6 mm(1)
Range
w US (OR-CA to UT-TX) / Mex. - Map (1)(2)
Food
Senna spp. (Fabaceae) (1)
See Also
Z. spectabilis and the male of Z. cruciger have similar markings(1):

Both have white markings on their lateral pronotum. Both also have sutural stripes the on pronotum and elytra (which the female of Z. cruciger lacks). They are most ready distinguished by their great difference in size. Z. spectabilis is only 0.7-1.6 mm, while Z. cruciger is 2.1-2.9 mm.
Print References
Horn, G.H. 1885. Contributions to the coleopterology of the United States. (Number 4). Transactions of the American Entomological Society 12: 128-162.
Internet References
Type - MCZ, Harvard
Works Cited
1.Handbook of the Bruchidae of the United States and Canada
Kingsolver J.M. 2004. USDA Tech. Bull. 1912 (2 vols.).
2.Global Biodiversity Information Facility (GBIF)