ART. 10 GALL-INHABITING CYNIPID WASPS— WELD 63 



CYNIPS MACULOSA, new species 



Fenuile. — Red, tips of antennae and abdomen darker; whole body 

 except abdomen dorsally covered with silky yellowish-white pubes- 

 cence. Head from above narrower than thorax, cheeks broadened 

 behind eyes, occiput concave ; from in front facial quadrangle 

 nearly one and one-half times as broad as high, malar space half 

 eye without groove, antenna fdiform, l-l-segmented, lengths as 

 (scape) 15:8:25:21:18:17:13:12:10:9:9:8:8:12. Mesonotum 

 smooth with setigerous punctures, parajDsidal grooves deep, narrow, 

 percurrent, no median. Sides of disk bounded by diverging straight 

 lines, transverse groove at base. Usual carinae on propodeum want- 

 ing, neck rugose. JNIesopleura smooth. Tarsal claws with a tooth. 

 Wing subhyaline, with two clouds and many small spots, pubescent, 

 ciliate, first abscissa of radius angulate, second curved upward dis- 

 tally and enlarged at apex but not reaching wing margin, aerolet 

 reaching one- seventh, cubitus five-sevenths way to basal, apical cell 

 with about 13 small spots, mostly round, one or two elongated as 

 though two spots had fused and in the base of the cell a cloud under- 

 neath an elongated spot; under the areolet in the discoidal cell a 

 larger cloud and six or seven fainter spots. Abdomen longer than 

 head and thorax, length to height to width as 44:31:31, lengths of 

 tergites along dorsal curvature as 31 : 9 : 5 : 3 : 2 : 6, hind margin of 

 second very oblique, ventral spine truncate, very broad with lateral 

 lobes, bristly. Using width of head as a base, the length of mesono- 

 tum ratio is 1.4, antenna 2.2, ovipositor 2.8, wing 4.5. Length 3,1- 

 4.3 mm. Average of 22 specimens, 3.79 mm. 



Tyj)e.— Cut. No. 27205, U.S.N.M. Type and 9 paratypes. Para- 

 types in American Museum, Field, and Stanford. 

 Host. — Quercus dwnosa. 



Gall (figs. 11 and 44). — Globular, 5-7 mm. in diameter, attached 

 by a short stout stalk to the midrib on the underside of the leaf in 

 the fall. Greenish, mottled with white while growing, turning brown 

 as they mature, a very thin papery epidermal laj-er becoming 

 loosened and peeling off in fragments in old specimens. Inside is a 

 darker stony-hard shell one-half millimeter in thickness, and within 

 this a single larval cell supported by dense radiating fibers. 



Habitat. — The type material was collected in Sequoia National 

 Park, Calif., on September 9, 1922, between the western gate and the 

 Cedar Creek checking station, on the Giant Forest Road. Some of 

 the galls were still green and others turning brown. At that date 

 they contained full-grown larvae, Avhich pupated about October 1. 

 The living flies were cut from the galls on November 10. The galls 

 were also seen at Los Gatos and Lakeport and Ukiah. H. Morrison 

 collected galls on Black Mountain, San Mateo County, in December, 



