Xanthoteras teres, new species

Host.--Quercus garryana

Gall (fig. 40). —A globular knob on a cylindrical stalk hanging from a vein on underside of leaf in autumn, dropping with the leaf, single or but few on a leaf, covered with a dense short woolly white pubescence which weathers away in old galls. They measure up to 5.5 mm. long by 2.5 mm. in diameter. Monothalamous. The pubescence consists of a dense layer of short brownish hairs like an inner fur at the base of the long white hairs. Underneath is a thick brownish stony-hard layer and within a thin layer of light-colored tissue in which is the larval cavity.

Habitat. — The type material was collected in Sequoia National Park on September 8, 1922, on the scrubby Kaweah oak above the Cedar Creek checking station on the Giant Forest road. Living flies were cut out of the galls on November 13. The galls were also collected at Fort Jones and Scott Bar, Calif., and at Siskiyou, McLeod, Wolf Creek, Oakland, Cottage Grove, and Salem, Ore. Fresh galls reach their full growth in late July.

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

Reference: https://www.biodiversitylibrary.org/page/7610708#page/320/mode/1up