North American gall-inducing wasp
Burnettweldia washingtonensis, formerly Disholcaspis washingtonensis, the fuzzy gall wasp, is a species of hymenopteran that induces stem galls on white oaks on the Pacific coast of North America.[1][2] The detachable galls have a little stem or neck, are gray or beige and fuzzy, and measure about 8–10 mm in diameter.[1][3] The larval chamber is located at the center of the ball, the interior of which is otherwise chocolate brown.[1][3] Older galls may appear pitted.[3] The locally common galls induced by this wasp are sometimes mistaken for the galls induced by Besbicus conspicuus.[3]
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