The Oak Rough Bulletgall Wasp, Disholcaspis quercusmamma, is a common pest of burr oak, Quercus macrocarpa, on shade and ornamental trees along the Colorado Front Range and other areas of the West. In some cases, the branches of host trees can be covered with the round galls associated with this insect.

The observed range of this insect is uncertain. It is of evident concern in Western states, but no warnings or accounts of its presence have been reported by Michigan State University as of March 2010.