Page:New Pacific Coast Cynipidæ (Hymenoptera).pdf/5

of hairs except for a few hairs on the ventral spine and tips of valves, and scattering hairs at the base of the second segment; abdomen produced dorsally, segments two to four with their ventral edges considerably rounded, segment two occupying about half the area; valves at about a 45° angle. Legs: Yellow-brown, femora especially of the hind legs darker, coxae piceous brown, tips of tarsi dark; finely and not densely hairy; tarsal claws simple. Wings: Clear, set with fine, brown hairs, edges ciliate; veins brown; areolet moderately small to closed; cubitus very fine, not reaching basalis; radial cell long and open, but the second abscissa of radius somewhat curved; first abscissa with only a suggestion of an angle, without a projection. Length: 1.5-2.0 mm.

Male.—Differs from the female as follows: antennae entirely brown, 15 (?)jointed; abdomen very small, moderately long-pedicellate; areolet averaging smaller; length uniformly near 1.5 mm.

Galls (P1. XXIV, Fig. 14).—Small, brown, egg-shaped cells scattered in the aments. Each cell monothalamous, naked, only microscopically granulate, well pointed at the apex, thin-walled and hollow. Apparently tremendously enlarged anthers, about 1 mm. in diameter by 2 mm. long. Scatteringly in aments of Quercus Douglasii.

Range.—California: Merced Falls.

Types.—Thirteen females, seven males and over 150 galls. Holotype female and paratypq females, males, and galls in The American Museum of Natural History; paratype adults and galls in Leland Stanford University, the U. S. National Museum, and the author's collection. Labelled Merced Falls, California; March 28, 1920; Kinsey collector. All of the adults are imperfect.

The galls were just maturing on March 28. Because of the location and structure of the galls, this form of the insect must complete its history in a month or two; there is undoubtedly an alternate generation, probably agamic.

Andricus humicola, new species
Plate XXIV, Figure 13

Female.—Bright rufous brown; thorax hairy, lateral lines in a smooth area, parapsidal grooves rugose anteriorly, foveæ very rugose, areolet large, claws simple. Head: Bright rufous brown, the moderately narrow median elevation and the mouthparts darker; about as wide as the thorax, considerably widened behind the eyes; rugoso-punctate, the cheeks more distinctly coriaceous and punctate, whole head moderately hairy. Antenne darker rufous brown; the second joint almost globular, the third joint longest, as long as one and two combined, fourth two-thirds the length of three. Thorax: Generally bright reddish brown; coriaceous and scatteringly punctate and hairy, especially anteriorly, on the sides, and on the pronotum; parapsidal grooves extending to the pronotum, fairly broad, deep, and smooth for two-thirds the distance, anteriorly finer, rugose, and widely divergent, gradually convergent and not widely separated posteriorly; median groove very fine posteriorly, merely indicated by a more rugoso-punctate depression anteriorly; anterior parallel lines extending about half-way toward the scutellum, somewhat raised and smooth; lateral lines extending more than half the length of the mesonotum, in an area somewhat darker in color, elevated, smooth and shining; scutellum rufous to black, longer than wide, rugose, hairy, with two large sunken areas basally indicating very rugose