adults reared V-1909 ex purplish, fusiform, vein swellings on Viburnum dentatum L., Magnolia, Mass., C.H. Clark

[also comments that Sackenomyia acerifolia, (named after where it was swept, not reared) is "very likely" a synonym.]

Viburnum
...
Purplish vein swelling (243a)...Sackenomyia viburnifolia Felt

The biology of this species generally resembles that of S. commota, except that the larvae are not as active. Adults were reared in May from the previous year's galls, but galls can be seen through the summer. Host: V. dentatum. Distr.: northeastern United States.