Diastrophus kinccddii, a gall wasp previously known only from California and the Pacific Northwest, is reported from the Great Lakes Region. It is present on thimbleberry, Rubus parviflorus, in three counties in the Upper Peninsula of Michi- gan and in Duluth, Minnesota. It may have arrived on the Keweenaw Peninsula of Upper Michigan within the past ten years. Information about its biology, distribu- tion, and abundance is presented.
Kraft, Kenneth J. and Erbisch, Frederic H.
"The Thimbleberry Gallmaker, Diastrophus Kincaidii, (Hymenoptera: Cynipidae), in the Great Lakes Region,"
The Great Lakes Entomologist, vol 23
Available at: https://scholar.valpo.edu/tgle/vol23/iss4/3