Cincticornia globosa

This dark-brown species with short, relatively broad wings was reared in some numbers from a subhemispheric, brown, slightly nippled, oak leaf gall on black oak, probably Quercus velutina, in April and May 1909 from material collected by Miss Cora H. Clarke at Magnolia, Mass., in October 1908. Apparently the same gall was taken by Miss Clarke on the scarlet oak, Quercus coccinea. A very similar oak leaf gall may produce a Cynipid.

Gall. Subhemispheric, brown, slightly nippled, 1.75 mm in diameter. It is monothalamous, occurs on the under side of the leaf and causes on its upper surface a slight, brownish elevation encircled by yellowish orange.

Cincticornia globosa n. sp.

was reared in April and May, 1909, from a subhemispheric, brown, slightly nippled oak leaf gall, 1.75 mm. in diameter.

Cincticornia globosa Felt.

A subhemispheric, brown, slightly nippled, monothalamous gall on the under side of the leaf, diameter 1.75 mm.

Cincticornia globosa

Globose or subglobose, thickened, usually reddish galls
A subhemispheric brown slightly nippled monothalamous gall on the under side of the leaf, diameter 1.75 mm

Polystepha globosa

Circular, flat or convex cell between veins
Smooth, flat or convex, thin-walled cell
Spherical gall

This gall is usually found on the lower side of leaves.

Host: Quercus velutina

Distr: MA