348 Annals Entomological Society of America [Vol. IV, 



Andricus crystallinus Bass. 



Andricus crystallinus, H. F. Bassett, Tr. Am. Ent. Soc, vol. 26 (1900), p. 319. 



Female. Cherry red to reddish brown, eyes, oral margin, spot on 

 front above the insertion of antennae, antenna? distally from 7th seg- 

 ment and a band on segments 1, 3, 4 and 5, dorsal and subdorsal vittag 

 on mesonotum concurrent with median longitudinal lines and lines 

 over base of wings, scutellum at base, metathorax largely, pedicel, 

 abdomen dorsally at base and on 3rd, 4th and 5th segments, pecten, 

 hind coxas, tips of tarsi and dorsal valve black or blackish. Head 

 minutely rugoso-punctate, face pubescent, antennae 14-segmented, 1st 

 segment obconic, 2nd oval, 3rd as long as 1 and 2 together, a trifle 

 longer than 4th or 5th, succeeding segments to 10th progressively 

 shorter, following segments subequal. Pronotum narrow in the middle, 

 punctate, mesonotum also punctate, parapsidal grooves complete, 

 median longitudinal lines reaching half-way to posterior margin, smooth 

 lines over base of wings long and rather broad, pleura smooth and shin- 

 ing, pubescent on upperand lower margins, scutellum rugose, fovea:' large, 

 oval, deep, bottom smooth and shining, approximate, covered throughout 

 with dense pubescence. Abdomen smooth and shining, 2nd segment 

 occupying about four-fifths of its length, basally pubescent at sides, 3rd 

 segment rather wide, 4th, 5th and 6th quite narrow, these segments 

 minutely punctate, ovipositor sheaths exserted and pubescent, legs 

 light brown, claws bidentate. Wings hyaline, pubescent, subcostal, 

 radial, basal and anal veins heavy and brown, others rather faint, radial 

 cell open at margin and rather long, its basal vein arcuate, areolet 

 indistinct, cubitus not reaching basal vein. Length about 2.25 mm. 



Gall. Irregularly shaped palisadal galls, in clusters of 5 or 6, on under 

 side uf leaves of Quercus dumosa, Quercus douglasi and Qitercus agrifoliai 

 and binding leaves together. Outwardly fuzzy. The individual gall is 

 about 7 mm. long and 2 to '.', mm. across. 



Habitat. Jasper Ridge, in the vicinity of Stanford Uni- 

 versity, Cal. (R. W. Patterson). St. Helena, Cal. (Miss Julia 

 Begley). Napa, Cal. (Bassett.) 



Andricus pacificus Ashm. 



Andricus pacificus, Ashmead, Proc. U. S. Nat. Mus., vol, lit (1896), p. US. 



Female. Reddish brown, eyes, ocelli, tips of mandibles, and tip of 

 dorsal valve blackish, 1st abdominal segment more or less fuscous, legs 

 and antennae basally a yellowish brown. Head faintly rugose, 

 pubescent, antennas 14-segmented, 1st and 2nd segments stout, 3rd long, 

 longer thna 4th, succeeding segments to Kith progressively shorter, 

 10th and following segments subequal except last, which is a trifle 

 longer than penultimate. Thorax faintly rugose, parapsidal and median 

 grooves on mesonotum reaching half-way to anterior margin, median 

 longitudinal lines extending half-way to posterior margin, smooth lines 

 over base of wings distinct and long, pleura aciculate, scutellum deeply 

 rugose, especially at apex, and pubescent, foveas large, subcircular, 

 shallow, with shining, punctate bottom, and contiguous. Abdomen 



