11)11] Cynipida of California 339 



Diplolepis dubiosa n. sp. 



Female. Black, the antennae, legs, tips of mandibles, tegulae, post- 

 scutellum and sheath of ovipositor lutcous. Head faintly rugose and 

 covered with closely appressed whitish hairs, antenna; 14-segmented, 

 filiform, outer third slightly incrassate, 1st segment stout, obconic, 

 2nd suboval, 3rd longest, 4th and succeeding segments to 9th progres- 

 sively shorter, 9th and following segments subequal, except the last, 

 which is somewhat longer then penultimate. Pronotum narrow 

 medially, mesonotum faintly reticulate, shining, parapsidal grooves 

 distinct, reaching anterior margin, scutellum deeply rugose, fo 

 distinct, large and broad, contiguous, separated only by a carina. 

 Abdomen about as large as head and thorax together, smooth, shining, 

 2nd tergite produced caudally almost to apex, slightly pubescent 

 laterally near the middle, spine of ventral valve moderate, pubescent. 

 Wings hyaline, pubescent, veins pale brown to black, radial cell long, 

 narrow, open at the margin, vein a1 base only slightly bent, areolet 

 distinct but the enclosing nervures (except distal one) very delicate. 

 Claws unidentate. Length 2 mm. 



Male. Black, the antenna?, legs (excepl coxae), tips of mandibles, 

 palpi, tegulss and petiole luteous. Head faintly rugose, face and cheeks 

 covered with long, whitish hairs. Pronotum, mesonotum and pleura 

 faintly reticulate, shining, mctanotum faintly aciculate, pubescent, 

 scutellum deeply rugose. Abdomen long, slender, compressed, pube- 

 scent laterally on 2nd segment. Antenna- L5-segmented, 1st segment 

 obconic, 2nd subglobose, 3rd longest, succeeding segments to 13th 

 progressively shorter, 13th and 1 1th nbcqual, 15th short and pointed. 

 Length 1.75 mm. 



Gall (PI. XXIII, tig. 1). A small, brown, thin-shelled gall arising, 

 several together, in the staminate ament of Quercus agrifolia. The gall 

 is about •'! or -I mms. long, rather angulate and more or less clavate. 

 Polythalamous. 



Habitat. Palo Alto, Cal. (R. W. Patterson.) 



4 DISHOLCASPIS D. T. & Kieff. 



Holcaspis, (',. Mayr, Gen. d. Cynip. (1881 l, p. 9, 35. 



Disholcaspis in. n. fur Holcaspis, preoi Dalla Torre and Kieffer, Das 



Tierreich, lief. 24 Cynipidae (1910), p. 371. 



Agamic generation. Head and thorax covered with a rather dense 

 pubescence, abdomen bare, the sides basally slightly pubescent. Cheeks 

 less than half the length of the eyes. Antennas 13-15 segmented, 

 pubescent. Pronotum narrow in the middle. Parapsidal grooves 

 incomplete, not reaching anterior margin. Base of scutellum with a 

 transverse groove. Ridges of the metanotum arcuate. Radial cell 

 long and open at the margin. Tarsal claws bidentate. Second tergite 

 of abdomen not produced linguiform caudally. Sexual generation 

 unknown. Galls on Quercus. 



