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Photo#1176196
Vitisiella spp. - Vitisiella
Copyright © 2015 James Tyler Bell

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?
Contributed by James Tyler Bell on 22 December, 2015 - 8:54pm
Last updated 23 December, 2015 - 8:51am

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).
… Charley Eiseman, 23 December, 2015 - 7:57am

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