introduced pine sawfly: Diprion similis (Hymenoptera: Diprionidae) - Nonnative Invasive Species in Southern Forest and Rangeland Ecosystem

introduced pine sawfly
Diprion similis (Hartig)

Identification, Biology, Control and Management Resources

Insects and Diseases of Trees in the South - USDA Forest Service
A Guide to Common Insects and Diseases of Forest Trees in the Northeastern United States - USDA Forest Service
A Field Guide to Common Insect Pests of Urban Trees in the Northeast - Vermont FPR