Andricus vernus, new species

Host. — Quercus garryana.

Gall (pl. 1, fig. 2). — A smooth, globular, green axillary bud gall, 4-5 mm. in diameter, with a very slight nipple at apex early in spring as new leaves are developing. When detached showing a small whitish sunken scar. After dropping the thin outer fleshy layer becomes wrinkled and soon weathers away, leaving a smooth, slightly elongated, light tan cell whose wall is 0.6-0.7 mm. thick, not brittle, containing about 15 small longitudinal passages.

Habitat . — Galls were collected on May 23, 1922, at Fort Jones, Calif., and sent to Washington under Hopkins U. S. No. 15640. The nutritive layer was then used up and the larvae full grown. Adults emerged on April 27, 1923, April 21, 1924, and April 3, 1925. These galls were seen on this host at Yreka and Scott Bar, Calif., and at Siskiyou, Oreg. Similar galls were seen on Quercus dumosa at Lakeport, Bartlett Springs, and Ukiah, Calif.

- LH Weld: (1944) New American Cynipids from galls^©

Reference: https://www.biodiversitylibrary.org/item/32802#page/27/mode/1up