ART. 10 GALL-INHABITING CYNIPID WASPS WELD 87 



ANDRICUS TUBULARIUS, new species 



Female. — Head and thorax reddish-broAvn. infiiscated about meta- 

 iiotum. abdomen red. Some have vertex and whole thorax more or 

 less infuscated. Face, sides of thorax and scutellum with short 

 white pubescence. Head granulate, broad as thorax, cheeks broad- 

 ened behind eyes, occiput concave, malar space .35, eye without 

 groove, fine radiating ridges at corners of clypeus, antenna filiform, 

 darker distall3% lo-segmented, lengths as (scape) 12:8:19:19:15: 

 14:11:11:9:9:9:8:8:8:11. Mesoscutum shining, microscopically 

 coriaceous with scattered setigerous j)unctures, parapsidal grooves 

 narrow, smooth, complete, no median groove but a median pebbled 

 streak extends halfway back to scutellum. Scutellum rugose with 

 two smooth transverse pits at base. Carinae on propodeum nearly 

 straight, slightly converging above, neck rugose. Mesopleura Avith 

 a smooth bare area. Tarsal claws with a tooth. Wing hyaline, 

 pubescent, ciliate, veins brown, radius heavy, first abscissa angulate 

 and slightly clouded, areolet reaching one-fifth, cubitus three-fourths 

 way to basal. Abdomen as long as thorax, length to height to Avidth 

 as 20 : 18 : 13, lengths of tergites along dorsal margin as 52 : IG, rest 

 hidden, second with pubescent areas on sides, ventral spine short, 

 in side view three times as long as broad, pubescent, from beloAv 

 tapering from base to apex. Using width of head as a base, the 

 length of mesonotum ratio is 1.3, antenna 2.5, ovipositor 2.8, wing 

 4.0. Length, 1.65-2.5 mm. Average of 42 specimens, 2.18 mm. 



Type.—Q.2it. No. 27218, U.S.N.M. Type and 15 paratypes. Para- 

 types at American Museum, Field, Stanford, Harvard, and Philadel- 

 phia Academy. 



Host. — Quercus uiululata. 



Gall (fig. 22). — Smooth, tan-colored, blunt, cylindrical cells burst- 

 ing out through the bark singly or in vertical rows of 2-6, only the 

 upper third or less protruding, not deciduous. Single cells measure 

 3.2 mm. long by 1.7 mm. in diameter with Avail .1-.2 mm. thick. 

 Occur in early summer on small tAvigs of previous season's groAvth. 

 Exit hole at apex and old galls show as a row of holes. 



Hahitnt. — The type material was collected April 6. 1918, near 

 mouth of Tijeras canyon in the Sandia Mountains, N. Mex. (Hopkins 

 U. S. No. 15626e). Adults emerged April 12. Galls Avere seen at 

 same locality in NoA^ember, 1921, the cells then just bursting through 

 the bark. Galls were collected in the Magdalena Mountains also. 



ANDRICUS UTRICULUS (Bassctt) 



These galls on Q. alha leaves haA^e been seen at Winnetka, Ravinia, 

 Fort Sheridan, NeAv Lenox, Utica (StarA^ed Ilock), and Moline, 111.; 

 at Ithaca, N. Y. ; at Ilosslyn and Alexandria, Va. ; at Plummer 



