Numerous small integral leaf galls on Quercus macrocarpa and stellata, similar to the sexual generation gall of Neuroterus floccosus but differing in being covered in tufts of white hair and in causing the leaf to curl severely, sometimes senesce beyond dense clusters of galls, and especially in causing the leaf lamina to contract so much around the galls that it creates a hole. As the gall develops, sometimes the leaf contracts enough that the gall drops out of the leaf, leaving a hole in the lamina. Fresh galls were observed in May in Kansas and Manitoba in June, old galls in Ohio in August. Male and female Neuroterus wasps have been reared from these galls.