Amphibolips gainesi n. sp.

Gall perfectly round and smooth, except the point of attachment to the acorn cup on which it grows. The point is small, it projects slightly and turns to one side. The color is pale brown, the outside not different in color or density from the hard cellular matter be- neath. The larval cell is imbedded in, and is adherent to this mass. Size from one half to one inch in diameter. As my galls had wintered on the tree or lain upon the ground, the color of fresh galls may be different. Like A. prunus Walsh, this species developes on the edge of the acorn cup. It is larger than that species, which is dark and coarsely wrinkled when dry.

This fine species was received from President M. R. Gaines, Til- lotson College, Austin, Texas.

- HF Bassett: (1900) New Species of North American Cynipidae (1900)^©

Reference: https://www.biodiversitylibrary.org/page/7522373#page/346/mode/1up