Disholcaspis quercusmamma, the oak rough bulletgall wasp, is a species of gall wasp in the family Cynipidae. The quercus in its name is the genus name for oak, while "mamma" is Latin for "breast", presumably a reference to the "nipple" on the gall.

The galls formed by several species in the Disholcaspis genus are called "bullet galls" due to their shape and size. Disholcaspis quercusmamma galls are similar in appearance to those formed by Disholcaspis quercusglobulus; the distinguishing characters are a velvety surface and pointed apex ("nipple").

The host plants are white oaks, including bur oak, swamp white oak, and overcup oak.^: 295

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