Diplolepis discularis, new species
Host. — Quercus garryana
Gall (fig. 34). — Disk-shaped, about 6 mm. in diameter by 1 mm. thick, single or scattered in small numbers on underside of leaf in fall. The upper surface is slightly concave, the edge sinuate, the margin reflexed nearly to the leaf surface. The transversely placed larval cell occupies the full height of the gall. Exit hole above.
Habitat. — The type material was collected September 8, 1922, in Sequoia National Park, Calif., near the Cedar Creek checking station on the road to Giant Forest on the Kaweah form of this Oregon oak. Living flies were cut out of the galls on November 10,
”- LH Weld: (1926) Field notes on gall-inhabiting cynipid wasps with descriptions of new species©
Reference: https://www.biodiversitylibrary.org/page/7610635#page/293/mode/1up