On leaf, under side, sub-globular (almost uniformly asymmetric in that
one side projects laterally so as to present a parabolic outline,
rather than a semi-circular one). A short definite nipple terminates
the gall. 2-4 mm. diameter. White or light yellow to red. Walls medium
in thickness, of a soft, almost fleshy consistency. Exterior surface
almost uniformly minutely shagreen-roughened when observed with lens.
The constricted base of the gall rests in a shallow saucer-shaped
structure.
This gall was described from Connecticut in citation below on _H.
ovata_. Rather common in Hocking County, Ohio, on _H. microcarpa_.
July, August.
Felt’s “Cecidomyia sp. Globose, irregular, ovate, granulate, a
slight nipple, dia. 2-3 mm.” probably belongs here.
Felt, Jour. Econ. Ent. 4:456. 1911.
Wells, Ohio Nat. 14:291. 1914.