Diplolepis bicolor, also known as the spiny bud gall wasp, is a species of cynipid wasp that induces bud galls on wild roses.

[1] This gall wasp is found throughout North America.

[2] The galls measure 10 to 12 mm in diameter and have a superficial resemblance to the leaf galls induced by Diplolepis polita.

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