Symphoricarpus (snowberry)
...
Swollen twig...cecidomyiid
Mention of this gall appears only in Felt (1918a, 1940) as a Cecidomyia sp. It is probably a Neolasioptera. Host: unspecified. Distr.: unspecified.
”- Raymond J. Gagne: (1989) The plant-feeding gall midges of North America©