Loxaulus brunneus

Quercus chrysolepis
Stem galls, woody stem swellings or cells under the bark
"Scrub oak" Type gall an abrupt swelling on twig, 8 mm in dia. Mono. Not recognized in the field.

Loxaulus brunneus (Ashmead)

Compsodryoxenus brunneus Ashmead
Loxaulus brunneus Weld

Distribution.--CA

Biology.--Only the unisexual generation is known. It induces stem galls on Q. chrysolepis.

Oompsodryoxenus brunneus Ashmead.

Gall. (Plate LI, Figs. 9-13.) On the branches of oak (Quercus chrysolepis). Polythalamous. Very hard, ovate or elongate woody swellings.

Habitat. California.

The types are in the United States National Museum.

Compsodryoxenus brunneus variety brunneus (Ashmead)

GALL. — None, or a slight stem swelling; the larval cells embedded in the wood, quite as in the other variety. On Quercus chrysolepis.

RANGE.— California: Mt. Diablo (Ashmead) ; Placerville. Probably confined to more northerly localities where Q. chrysolepis occurs.