EENY317: Pine Sawflies, Neodiprion spp. (Insecta: Hymenoptera: Diprionidae)
Figure 13. Cocoons of the blackheaded pine sawfly, Neodiprion excitans Rohwer, in bark crevices on truck.
Credit: Photograph by: Arnold T. Drooz, USDA Forest Service, www.forestryimages.org
