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Disholcaspis quercusmamma
oak rough bulletgall wasp
Disholcaspis quercusmamma, the oak rough bulletgall wasp, is a cynipid gall wasp that induces distinctive bullet-shaped galls on twigs of white oaks. The species exhibits an alternation of generations with sexual and asexual phases, each producing morphologically different galls. The fall bullet galls are large, conspicuous structures with a velvety surface and pointed apex, while spring galls are small and inconspicuous on leaf buds. This wasp possesses notably enlarged venom glands, with the venom reservoir occupying approximately one-third of abdominal volume, implicating venom compounds in gall induction.