Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
Hopkins, A. D. 1909b. Practical information on the scolytid beetles of North American forests. I. Bark beetles of the genus Dendroctonus. United States Department of Agriculture, Bureau of Entomology, Bulletin 83(1). 169 p., 3 pls., 102 figs.