Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Photo#1176196
Vitisiella spp. - Vitisiella

Vitisiella spp. - Vitisiella
California/home, St. Mary's County, Maryland, USA
September 5, 2015
Size: 1-2 mm
I found these on the underside of a wild grape in our yard. Any ideas?

Moved
Moved from ID Request.

These galls are caused by a species of midge in the genus Vitisiella. The genus needs revision, and this may be an undescribed species. They have nothing to do with phylloxerans, which are aphid-like insects (one of which does cause grape galls).