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Diastrophus kincaidii
2222_2479 Photo added 2013-03-01

Diastrophus kincaidii (Hymenoptera: Cynipidae)
Thimbleberry Stem Gall Wasp
Larrabee State Park, Bellingham, Whatcom County, Washington
September 9, 2012

Wasp-induced stem gall in thimbleberry (Rubus parviflorus), cut up showing the radial arrangement of larval cells around the central core.

all photos and text © Joyce Gross