Chalcid parasitoid of Disholcaspis quercusglobulus - Torymus
Butter Hill Wildlife Sanctuary, Pelham, Hampshire County, Massachusetts, USA Size: 2.2 mm
Emerged on 4/24/2011 from a 7.5 mm diameter, tan-colored white oak bullet gall collected on 12/30/2010. Although substantially smaller, this looks to me like the same species as the one I just posted.