8Q PROCEEDINGS OF THE NATIONAL MUSEUM vol. 08 



somewhat radiall}^ without any false chamber and the exit hole is 

 in one side. 



Habitat. — Type material collected at Pataironia. Arizona, on 

 December 12, 1921, when the galls contained pupae. The adults 

 were cut out of the galls on January 1. One paratype Avas cut from a 

 gall collected in the Chiricahua Mountains. Similar galls have 

 been seen on Q. undulata on Abo Pass in the Sandia ]Mountains, 

 near Socorro, in Nogal Canyon, and in Burro Mountains in New 

 Mexico. 



ANDRICUS TUBALIS. new species 



Female. — Dark reddish-broAvn, mesonotum and posterior third 

 of second tergite nearly black, antenna yellowish. Head granulate, 

 coriaceous above antennae; from above transverse, broad as thorax, 

 cheeks narrow, but slightly broadened behind eyes, occiput not 

 concave; from in front malar space .4 eye without groove but fine 

 ridges from comers of clypeus, antenna filiform, 13-seginented, 

 lengths as (scape) 14:6:12:12:11:10:10:9:9:8.5:8:7:12. Sides 

 of pronotum rugose, pubescent. Mesoscutum dull, coriaceous with 

 scattered setigerous punctures, parapsidal grooves smooth, wider 

 behind, obsolete anteriorly, no median. Scutellum with Iavo pits 

 at base, disk rugose, sloping laterally from a median coriaceous 

 ridge. Carinae on propodeum short, stout, slightly arcuate. Meso- 

 pleura striate betAveen shining coriaceous areas above and below. 

 Hind coxa and femur stout. Claws with tooth. Wing hyaline, 

 pubescent, ciliate, veins yellowish-brown, cubitus and anal scarcely 

 visible, first abscissa of radius angulate, areolet large but faint. Ab- 

 domen as long as thorax, length to height to Avidth as 36:35:22. 

 lengths of tergites as 34 : 2, rest telescoped, A^alves oblique, ventral 

 spine slender. Using width of head as a base the length of 

 mesonotum ratio is 1.3, antenna 1.9. ovipositor 2.0, Aving 3.1. 

 Length, 2.8 mm. 



Tyi)e. — Cat. No. 27217, U.S.N.M. Paratype in balsam Avith author, 



Ilost. — Quercus arizonica. 



Gall (fig. 21). — Arising from a Aveak bud on small tAvigs, usually 

 on Avood of previous year, easily detachable. Trumpet-shaped, the 

 outside fluted, tapering to a sessile or clasping base, the flaring end 

 forming a shalloAv cup in the bottom of Avhich is the exit hole, 5-8 

 mm. long, cup up to 7 mm. in diameter. yelloAvish-Avhite in color. 

 The single larval cell lies longitudinally in the cylindrical stem of 

 the gall, no false caA^ity present. 



Habitat. — The type material Avas collected June 22, 1918, at Oracle, 

 Ariz. The tAvo adults emerged and died before August 23, Empty 

 galls Avere seen at the same locality in December, 1921. Precisely 

 similar galls Avere observed on Q. ohlongifolia at Nogales. 



