Callirhytis parva

Quercus imbricaria
Flower galls
Globular, 1-2 celled, covered with short crinkly hairs, dropping about the middle of May. Adults were cut out June 11 (DC). Type host.

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Q imbricaria. Galls globular, greenish-white, usually two-celled, covered with crinkly hairs. The galls began to drop May 16; adults out June 11 (DC). Some adults came out and had died by June 1 and others were cut out June 4 (WV).

Callirhytis parva, new species

Host.--Quercus imbricaria

Gall.--On the staminate flowers dropping to the ground about the middle of May. Somewhat globular, greenish-white, covered with coarse sprawling pubescence, 3-4 mm in diameter, single or in clusters. Fleshy at surface, but harder inside; usually two-celled.

Locality.--VA, MO

Collected may 16, flies cut out of galls June 11.