Janetiella brevicauda [Gagne lists Brachineura vitis, Dasineura vitis, Lasioptera vitis, and Rhizomyia vitis as likely inquilines in similar galls]
Globular, irregular, usually red swellings on leaf, tendril, or flower
This is the most commonly reared species from these galls. It is probably multivoltine. Full-grown larvae cut a hole in the gall and drop to the soil to pupate. Galls sometimes cover so much surface that leaves and flower parts are deformed.
Range: New Hampshire to North Carolina, west to Ontario and Missouri”
- Raymond J. Gagne: (1989) The plant-feeding gall midges of North America©