Aphrastus unicolor is a species in the family Curculionidae ("snout and bark beetles"), in the order Coleoptera ("beetles"). It is found in North America.
References
Further reading
Arnett, R.H. Jr., M. C. Thomas, P. E. Skelley and J. H. Frank. (eds.). (2002). American Beetles, Volume II: Polyphaga: Scarabaeoidea through Curculionoidea. CRC Press LLC, Boca Raton, FL. Poole, Robert W., and Patricia Gentili, eds. (1996). "Coleoptera". Nomina Insecta Nearctica: A Check List of the Insects of North America, vol. 1: Coleoptera, Strepsiptera, 41-820. Richard E. White. (1983). Peterson Field Guides: Beetles. Houghton Mifflin Company. Ross H. Arnett. (2000). American Insects: A Handbook of the Insects of America North of Mexico. CRC Press.