Diplolepis cava, new species
Host. — Quercus breviloba and Quercus laceyi.
Gall (fig. 5). — An oak apple, 14-20 mm. in diameter, usually single on under side of leaf in fall. Reddish-brown, not spotted, wall thin, central cell supported by numerous silky fibers, a definite bundle of parallel fibers from cell to point of attachment of gall.
Habitat.—The type material was collected in October 1917, near Austin, Tex., on the shin oak, Q. breviloba. A gall opened November 10, contained a pupa which transformed November 26. By December 4, adults had chewed out of the inner cell and were found among the radiating fibers. The normal emergence date unknown. These galls were seen also at Boerne and Kerrville. A paratype fly came from a gall on Q. laceyi at Boerne, the gall containing a pupa on November 20, which transformed by December 7.
”- LH Weld: (1926) Field notes on gall-inhabiting cynipid wasps with descriptions of new species©
Reference: https://www.biodiversitylibrary.org/page/7610635#page/290/mode/1up