372' Annals Entomological Society of America [Vol. IV, 



Synergus dubiosus n. sp. 



Female. Yellowish brown, eyes, tips of mandibles, occiput dorsally 

 continued on to vertex and front almost to the base of the antenna;, 

 with the exception of a narrow strip on eye, pronotum in the middle, 

 pecten, pleura beneath, mesonotum, scutellum and metathorax entirely, 

 pedicel and abdomen dorsally almost to apex black, Head faintly 

 rugose, sparsely and shallowly punctate on vertex, face radiatelv striate, 

 pubescent, antennas 14-segmented, thick but filiform, 1st and 2nd seg- 

 ments stout, 3rd segment long, as long as 1 and 2 together, 3rd-5th 

 subequal, 6th and following segments progressively shorter to last. 

 Pronotum faintly rugose, closely punctate, clothed with short, appressed, 

 whitish pubescence, parapsidal grooves incomplete, reaching more than 

 half-way to anterior margin, median longitudinal lines and smooth 

 lines over base of wings distinct, mesopleura transversely aciculate, 

 scutellum deeply rugose, basal fovea? large, oval and shallow, bottom 

 rough, contiguous, separated by a median carina. Abdomen short, 

 not quite as long as the thorax, smooth and shining, 2nd and 3rd tcrgites 

 connate, completely concealing following segments, elliptical from above, 

 triangular from side, posterior margin truncate and narrowly punctate. 

 Wings hyaline, pubescent, veins black, radial cell closed, areolet distinct, 

 cubitus not reaching basal vein. Length 4 mm. 



The male has 15-segmented antennae. 



Bred from galls of Callirhytis pomiformis on Qucrcus agrifolia. 

 Habitat. Stanford University, Cal. (R. W. Patterson.) 



10 CEROPTRES Hartig. 



Ceroptres, T. Hartig, Zeits. f. Ent., vol. 2 (1840), p. 186, 197. 



Face with two parallel ridges from insertion of antennas to clypeus, 

 beyond these striate, antennas in female 12-14 segmented, distally 

 thickened, in male 15-segmented, sometimes 14-segmented. Parapsidal 

 grooves usually not reaching anterior margin of mesonotum, scutellum 

 with two basal foveas. 2nd and 3rd tergites more or less connate, 

 covering nearly the entire abdomen. Radial cell closed, ventral valve 

 short, claws bidentate. Inquilines in galls on Quercus. 



Ceroptres pomiformis Ashm. 

 Ceroptres pomiformis, Ashmead, Tr. Am. Ent. Soe., vol. 12 (1885), p. 300. 



"Male. Length .05 inch. Slender, head yellowish brown, with a 

 dark brown blotch enclosing ocelli; eyes brown; antennas 15-jointed, 

 yellowish, with the apical third brown; thorax black, finely pubescent; 

 abdomen bright yellowish brown, infuscated towards tip; 'wings hyaline, 

 veins yellow, radial area closed, narrow. 



"This pretty little species is described from two specimens bred 

 from gall of Andricus pomiformis Bass., sent to me from California." 

 (W. H. Ashmead). 



I have not seen examples of this species. 



