Diplolepis nodulosa

Diplolepis nodulosa, also known as the rose-stem gall wasp, is a species of cynipid wasp that induces bud galls on wild roses in North America. This galls induced by this species have a number of inquilines and parasitoids. D. nodulosa is assigned to a clade of Nearctic stem gallers within Diplolepis along with Diplolepis californica, Diplolepis oregonesis, Diplolepis spinosa, and Diplolepis triforma.