Cynips maculosa, new species

Host -- Quercus dumosa

Gall (figs. 11 and 44). — Globular, 5-7 mm. in diameter, attached by a short stout stalk to the midrib on the underside of the leaf in the fall. Greenish, mottled with white while growing, turning brown as they mature, a very thin papery epidermal later becoming loosened and peeling off in fragments in old specimens. Inside is a darker stony-hard shell one-half millimeter in thickness, and within this a single larval cell supported by dense radiating fibers.

Habitat. — The type material was collected in Sequoia National Park, Calif., on September 9, 1922, between the western gate and the Cedar Creek checking station, on the Giant Forest Road. Some of the galls were still green and others turning brown. At that date they contained full-grown larvae, which pupated about October 1. The living flies were cut from the galls on November 10. The galls were also seen at Los Gatos and Lakeport and Ukiah. H. Morrison collected galls on Black Mountain, San Mateo County, in December, 1910, and reared an adult the next summer. Koebele collected galls in the Santa Cruz Mountains and others in Sonoma County.

- LH Weld: (1926) Field notes on gall-inhabiting cynipid wasps with descriptions of new species^©

Reference: https://www.biodiversitylibrary.org/page/7610635#page/331/mode/1up