“Globose, thin-walled with a false chamber at the apex. Dia. 2-3 mm.”
Felt.
In my material, the false chamber is large, occupying more than half
of the gall. The gall is slightly balloon-shape, 2½ mm. high. Surface
perfectly smooth. Collected, Hocking County, Ohio, on H. ovata.
Sears in his “Insect Galls of Cedar Point (Ohio) and Vicinity,”
described my number 5 under this species.
Felt, Jour. Econ. Ent. 4:456. 1911.
Felt, Bull. Brooklyn Ent. Soc. 8:99. 1913.