ART. 10 GALL-IXHABITING CYNIPID WASPS WELD 33 



DIPLOLEPIS SULFUREA, new species 



Female. — Red, the eyes, vertex, clypeus, anterior and lat- 

 eral lines, transverse groove, coxae and distal part of abdo- 

 men black. Head as broad as thorax, cheeks not enlarged be- 

 hind eyes, occiput not concave, vertex coriaceous; from in front 

 face i^ubescent, facial quadrangle higher than broad, malar 

 sj^ace one-third eye without groove, antenna 13-segmented, lengths 

 as (scape) 8 : 5 : 9 : 8 : 7 : 7 : 6 : 6 : 6 : 6 : 5.5 : 5 : 10. Mesoscutum smooth 

 with scattered setigerous punctures, parapsidal grooves narrow, 

 smooth, deep, percurrent. Disk of scutellum pubescent, slightly 

 rough behind, bounded on sides by straight lines slightly di- 

 verging behind, transverse grooves at base smooth. Carinae on 

 propodeum faint, strongly curved, spiracular areas smooth, pu- 

 bescent. Mesopleura smooth. Tarsal claw with a tooth. Wing 

 large, hyaline, pubescent, ciliate, veins brown, first abscissa of ra- 

 dius slightly clouded, second long and almost straight, radial cell 

 over four times as long as broad, areolet reaching one-fifth way to 

 basal, cubitus indistinct. Abdomen as long as head and thorax, 

 lengths of tergites along dorsal curvature as G7 : 11 : 6 : : 2 : 5, second 

 pubescent at base and hind margin very oblique, ventral spine slen- 

 der, five times as long as broad in side view. Using width of head 

 as a base the length of mesonotum ratio is 1.2, antenna 2.3, wing 

 4.5, ovipositor 2.7. Length 1,8-2.1 mm. Average of 3 pinned speci- 

 mens, 1.95 mm. 



T;/pe.—Q?it. No. 27193, U.S.N.M. Paratype at Stanford. 



Hosts. — Quercus arizonica., grlsea., ohlonglfolla. 



Gall (figs. 8 and 36). — A hollow cone, sessile at base and open at 

 apex, densely covered with long sulphur-yellow spines, on under 

 surface of leaf, single or scattered, sometimes as many as nine on 

 a leaf but usually only one to three. The cone is up to 7 mm. high 

 by 4 mm. in diameter at base, with a crystalline surface, white or 

 rosy when growing, the spines up to 4 mm. long and often rosy at 

 the tip. The larval cell lies transversely just below middle of gall 

 and below it is a small obconical cavity reaching to point of attach- 

 ment. The lower part of the large distal cavity above larval cell is 

 constricted off by a narrow circular shelf. Occurs in the fall drop- 

 ping only with the leaf. 



Habitat. — The type fly is selected from adults cut from galls on 

 Q. arkonica collected by Ed Jacot September 28, 1919, in Bear 

 Canyon in the Huachuca Mountains, Ariz. The flies were alive 

 when cut out on December 4 and would probably have emerged in 

 the spring. One paratype is from a gall on Q. grlsea collected at 

 Ashfork in October, 1922. The writer has also taken the galls on 



60726—26 3 



