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Sphaeroteras trimaculosum
2222_1502 Photo added 2007-11-01

Sphaeroteras trimaculosum (Hymenoptera: Cynipidae)   (Synonym: Atrusca trimaculosa)
Woollybear Gall Wasp
Cosumnes River Preserve, San Joaquin County, California
October 19, 2007

On Quercus lobata (Valley Oak).

all photos and text © Joyce Gross