Cincticornia pustulata

This species was reared in some numbers in the latter part of April and early in May 1909 from oval, pustulate swellings on the leaves of the black oak Quercus velutina, taken in MA in October 1908. Apparently the same species was reared March 30 1896 from a similar leaf gall on red oak, Quercus rubra, taken at DC.

Gall. This is a variable brown, irregularly oval, pustulate swelling 5 to 6 mm in diameter. It occurs here and there on the leaf surface.

Cincticornia pustulata

A variable brown, irregularly oval, pustulate leaf swelling, diameter 5 to 6 mm, on Q velutina, Q rubra

Cincticornia pustulata n. sp.

reared in April and May, 1909, from oval, pustulate swellings, 5 to 6 mm. in diameter, on the leaves of yellow barked or black oak, Quercus velutina, taken by Miss Cora H. Clarke at Magnolia, Mass.

Cincticornia pustulata Felt.

Flat, inconspicuous galls.
A variable brown, irregularly oval, pustulate swelling 5 to 6 mm. in diameter.

Cincticornia pustulata

Flattened, pustulate or blister galls
A variable brown, irregularly oval, pustulate swelling, 5 to 6 mm in diameter.

Polystepha pustulata

Circular, flat or convex cell between veins
Smooth, flat or convex, thin-walled cell
Flat and inconspicuous or slightly raised blisters
Gall protruding on both surfaces of leaf

The typical gall shows on both surfaces of the leaf.

Host: Quercus velutina

Distr: MA