Amphibolips nubilipennis

Cynips nubilipennis
Callaspidea nubilipennis
Cynips quercus sculptus
Cynips quercus sculpta
Amphibolips sculpta

Gall. Attached to the under side of leaves of red oak (Quercus rubra) and scarlet oak (Quercus coccinea). Globular or oblong oval and the color of a green grape sometimes with a tinge of pink, succulent and translucent. Internally there is a single cell which can be seen when held up to the sunlight. Diameter 6 to 18 mm.

The galls of this distinct species may be found fully developed from about the middle of June to early in July, the fly appearing during the latter month.

The gall when fresh is almost exactly like a green grape and is sometimes partly or wholly pinkish. It is juicy and soft with a hard central larval cell.

When dry the gall is shriveled, and very distorted in shape. It is then hard and woody and contains a rounded larval cell in surrounding substance.

Habitat: NY, NJ, CT, MA, PA, MI, IO, IN, IL

- William Beutenmuller: (1909) The species of Amphibolips and their galls^©