Xanthoteras tubifaciens, new species

Host. — Quercus garryana.

Gall (fig. 41). — A convex mass of tubular galls standing side by side in a compact cluster on the underside of the leaf in the fall. The mass measures up to 25 mm. long by 15 mm. wide. The individual galls are easily detached, especially in preserved specimens, white or cream-colored, up to 9 mm. long, tapering gradually from the base to a diameter of about 3 mm. at the distal open end, the distal portion beset with tapering spines which are often rosy at the tip. The single larval cell lies midway of the length of the gall and measures about 2 mm. long by 1.2 mm. in diameter. The tissue of the dried galls is of crystalline hardness so that the insects are unable to chew their way out of preserved specimens.

Habitat. — The type material was collected September 8, 1922, in Sequoia National Park, Calif., just above the Cedar Creek checking station on the road to Giant Forest. At that time the galls contained full-grown larvae. Living flies were cut out of the galls on November 10. These galls were seen just starting to develop at McLeod, Oreg., on July 22. They were also seen at Yreka, Calif., and the Stanford collection has galls from Siskiyou, Oreg.

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

Reference: https://www.biodiversitylibrary.org/page/7610635#page/321/mode/1up