1911] Cynipida of California 373 



Ceroptres dorsalis Prov. 



Ceroptres dorsalis, Provancher, Addit. Hym. Ou< 1» e (1888), p. 398. 



" 9 Long. .18 pee. D'un beau jaune-miel, avec les yeux, une 

 tache sur le vertex, le lobe median du mesonotum, lc metanotum et une 

 ligne sur le dos des premiers segments de 1' abdomen, noir. Les mandi- 

 bules noires a 1' extremite. Les antenncs avec les pattes, jaune sans 

 aucune tache. La face fortement striee et d'un jaune plus pale. Ailes 

 hyalines, a nervures brunes, legerement velucs, la radiale fcrmee en 

 avant. Abdomen comprime, a tariere redressee, depassant la ligne du 

 dos. Los Angeles (Coquillett) . 



"Superbe especc, bien remarquable par sa taille. 



" cf Meme coloration que dans la 9 , mais Ires remarquable par 

 son duexieme segment abdominal qui se developpe en une double 

 ecaille depassant l'extremite de 1' abdomen et sc prolongeant en dessous 

 d' au moins le double de 1' epaisseur des autres segments. " (L. Provancher.) 



I have not seen examples of this species. 



Ceroptres niger n. sp. 



Female. Black, femora distally, tarsi, oral margin and sheath of 

 ovipositor brown; somewhat pubescent. Head faintly reticulate and 

 shining, face striate, pubescent, antennas 13-segmented, 3rd segment as 

 long as 1 and 2 together, longer than 4th, succeeding segments to 10th 

 progressively shorter, 10th and following segments subequal, except the 

 last, which is twice as long as penultimate. Pronotum wide in the 

 middle, rugose, mesonotum faintly reticulate and shining, parapsidal 

 grooves not reaching anterior margin, mesopleura aciculate, a median 

 patch smooth and shining, scutellum coarsely rugose, almost coarsely 

 reticulate, foveas transverse, large, oval and shallow, with smooth 

 bottom, widely separated. Abdomen smooth and shining, 2nd tergite 

 reaching more than half-way to apex and pubescent at base, 3rd tergite 

 rather wide, 4th and 5th narrow, faintly punctate on posterior margin, 

 ovipositor sheath exserted, dorsal valve conspicuous and pubescent. 

 Legs clothed with pubescence. Wings hyaline, pubescent, radial cell 

 closed, short, basal vein not much curved, areolet present but enclosing 

 veins indistinct, cubitus not reaching basal vein. Length 1.5 mm. 



Bred from galls of Holcaspis eldoradensis on Quercus lobata. 

 Habitat. Jasper Ridge, near Stanford LTniversity, Cal. 

 (R. W. Patterson.) 



11 PERICLISTUS Forst. 



Avlax (part.), T. Hartig, Zeits. f. Ent., vol. 2 (1S40), p. 186, 10.5. 

 Periclistus, A. Forster, Verh. Zool. Ges. Wien, vol. 19 Abh. (1869), p. 332, 337. 



Face radiately striate, antennae filiform, in female usually 12-seg- 

 mented, in male 14-segmented, mesonotum faintly rugoso-punctate and 

 pubescent, parapsidal grooves complete or sometimes not reaching 

 anterior margin, scutellum with two transverse basal foveas, 1st abdom- 

 inal segment or petiole deeply striate, 2nd and 3rd tergites connate, 

 covering a large part of the abdomen. Radial cell short, closed. In- 

 quilines in different galls. 



