Cincticornia serrata

This species was reared in June 1908 from circular blister galls on scarlet oak, Quercus coccinea, taken near Boston MA.

Gall: The dark brown, broadly yellow-margined blister gall is circular and about 3 mm in diameter. The galls occur here and there upon the leaf.

Cincticornia serrata

A broadly yellow-margined, circular, blister leaf gall, diameter 3 mm, on Q coccinea

Cincticornia serrata Felt.

Flat, inconspicuous galls.

A broadly, yellow margined, circular, blister gall, diameter 3 mm.

Cincticornia serrrata

Flattened, pustulate or blister galls
A broadly yellow margined, circular, blister gall, diameter 3 mm.

Polystepha serrata

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

A photo in Felt (1940) shows a central nipple on this gall. [Felt 1940 doesn't seem to have a photo of this gall?]

Host: Quercus coccinea

Distr: MA