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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