Robinson, M. (1948). A Review of species of the genus Canthon inhabiting the United States. Transactions of the American Entomological Society 74(2):83-100. http://chla.library.cornell.edu/cgi/t/text/pageviewer-idx?c=chla;cc=chla;rgn=full%20text;idno=5077659_4284_002;didno=5077659_4284_002;view=image;seq=0025;node=5077659_4284_002%3A7.3