Philonix californica, sp. nov.

Gall. — On the upper surface of the leaves of a species of white oak. Monothalamous. Rounded, flattened disc-like, becoming slightly elevated toward the middle. The sides are flat and very thin, and the gall rests closely on the leaf. The larva lives in the center of the elevated part. The color is pinkish or purplish, with the apex sometimes yellowish. Width, 3 to 4 mm. Height, 1 mm.

Habitat — Kern Co., California, January.

Type — United States National Museum. Described from five females.

Trichoteras californicum

Quercus douglasii, dumosa,
Leaf galls, detachable
Flat spangle on upper side, 2.6-4.4 mm.

Feron californicum (Beutenmueller, 1911), comb. nov.

Gall (Fig. 96). The monolocular spangle leaf gall is on the upper surface of the leaves, rounded, flattened disclike, slightly elevated toward the middle, pinkish or purplish, with the apex sometimes yellowish. Sides of the gall are flat and very thin; the larval chamber is in the central elevated part; the diameter of the gall is 3–4 mm, height 1 mm (Beutenmueller 1911).

Biology. Only the asexual generation is known, which induces galls on Q. cornelius-mulleri, Q. douglasii and Q. dumosa (section Quercus, subsection Dumosae). The gall matures by November and the adult emerges in
January.

Distribution. USA: California.