Callirhytis balanella

Quercus emoryi
Acorn galls
Fig 14.

Callirhytis balanella, new species

Host: Quercus emoryi Torr.

Gall (pl. 1, fig. 3): Similar to a "pip" gall in shape but produced on the side of the cup of an undersized acorn in June and July. Gall slightly flattened, 4 mm. high by 3 mm. in diameter.

Habitat: The type and one paratype are from galls collected at Cherry, Ariz., by Mrs. N. W. Capron on Oct. 4, 1935. One adult emerged April 23 and the other May 1, 1937. One paratype is from a gall Mrs. Capron collected at Prescott, Ariz., Sept. 12, 1950, and the living adult was cut out Apr. 11, 1952. Galls were seen in the Santa Catalina and Huachuca Mountains and at Patagonia, Nogales, and Bisbee, Ariz., and at Alpine, Tex.

Andricus balanella
Acorn-Cup-Gall Wasp

Hosts: Quercus emoryi

Galls of this wasp protrude either from the outer or inner edge of the acorn cup of Emory oak. These mottled green and dark brown monothalamous galls are glabrous, smooth, glossy and often covered with honeydew.