Occurrence of the oak rough bulletgall wasp, Disholcaspis quercusmamma (Walsh) (Hymenoptera: Cynipidae), as a street tree pest in Colorado

The oak rough bulletgall wasp, Disholcaspis quercusmamma (Walsh) (Hymenoptera: Cynipidae), has become an increasingly important shade tree pest in Colorado with the expanded planting of its hosts, bur oak and swamp white oak. The insect produces woody galls on the twigs of the plant that are disfigu...

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