Pachybrachis vestigialis is a species in the family Chrysomelidae ("leaf beetles"), in the order Coleoptera ("beetles").bugguide.net Pachybrachis vestigialis species information.Integrated Taxonomic Information System (ITIS)Encyclopedia of Life Pachybrachis vestigialis species overview. Pachybrachis vestigialis is found in North America.
References
Further reading 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.
Peterson Field Guides: Beetles, Richard E. White. 1983. Houghton Mifflin Company. Riley, Edward G., Shawn M. Clark, and Terry N. Seeno (2003). Catalog of the leaf beetles of America north of Mexico (Coleoptera: Megalopodidae, Orsodacnidae and Chrysomelidae, excluding Bruchinae). Coleopterists Society Special Publication no. 1, 290.