Disholcaspis quercusomnivora

Quercus chapmani
Stem galls, detachable
A big smooth bullet gall, 15-20 mm in dia.

[Photo caption]
On Q chapmani. Adults were cut out Jan 10.

Holcaspis omnivora (Ashmead)

Cynips q omnivora
Andricus omnivorus
Holcaspis omnivora

Gall. (Plate VII, Figs. 4, 5, 6, 7.) Singly or in clusters of two or three on the twigs of different kinds of oaks (Qurcus brevifolia, Quercus catesbaei [erroneous]; Quercus virginiana [erroneous], Quercus minor [stellata], and Quercus chapmani). Globular or irregularly rounded, sometimes confluent. Hard, pale brown or yellowish, sometimes tinged with red. Internally there is a small larval cell, sometimes loose, but more often attached to the hull near the bud axil. Diameter 8 to 20 mm.

Habitat. Florida.

The gall of this species resembles that of Holcaspis globulus, but the fly is almost entirely rufous while Holcaspis globulus is nearly black.

Disholcaspis quercusomnivora (Ashmead 1885)

Hosts: Quercus chapmanii

[Asexual generation detachable stem gall found in Florida in the fall.]