32 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 08 



tibia longer than tarsus, whose segments are as 26:9:6:5:10 (with 

 claw 14), claw with tooth. Wing subhyaline, pubescent, ciliate, veins 

 brown, first abscissa of radius clouded above its angle, second nearly 

 straight, radial cell three and three-tenths times as long as broad, 

 areolet reaching one-fifth way to basal, cubitus reaching basal. Ab- 

 domen almost as long as head and thorax, lengths of tergites along 

 dorsal margin as 65 : 4, rest hidden, second pubescent at base and 

 hind margin at angle of about 45°, ventral valves oblique, protrud- 

 ing, ventral spine slender, in side view six times as long as broad, ovi- 

 positor curved at the tip. Using width of head as a base the length 

 of mesonotum ratio is 1.5, antenna 2.9, wing 5.0, ovipositor 3.2. 

 Length, 2.1-2.5 mm. Average of 12, 2.4 mm. 



Type.— Cdit. No. 27192, U.S.N.M. Type and 4 paratypes. Para- 

 types at American Museum, Field, and Stanford. 



Host. — Quercus arizonica. 



Gall (figs. 7 and 35). — Cylindrical with a deep broad cup at apex, 

 dark red, attached om under side of leaf in the fall, falling with 

 the leaf. Usually only one or two on a leaf. The galls measure 

 up to 5 mm. high and 5 mm. in diameter at upper end. The lower 

 end with a sharp flaring rim is sessile on the leaf surface, the upper 

 half dilated, not so smooth, brownish, often inrolled at top, giving 

 the gall somewhat the appearance of a sea anemone. The basal half 

 of the gall is occupied by a centrally placed conical cavity, above 

 which and immediately below the floor of the cup is an excentrically 

 placed larval cell which is cut transversely, if at all, when the gall 

 is split lengthwise. 



Habitat. — The type locality is the Santa Catalina Mountains, 

 Ariz., where galls, then containing pupae, were collected on 

 Q. arizonica on December 21. 1921, at an elevation of 5,700 feet neai- 

 the Daily camp on the east side of the range. Living adults which 

 would probably have emerged in the spring were cut out of the 

 galls on January 13. The galls were also seen on the same host at 

 Oracle and in Santa Rita, Huachuca, and Chiricahua Mountains, 

 Ariz. Apparently the same galls were seen on Q. ohlongifolia in 

 the Santa Rita and Tumacacori Mountains. 



DIPLOLEPIS SPLENDENS (Weld) 



The writer collected galls of this species November 7, 1921, in Blue 

 Canyon west of Socorro, N. Mex., on Quercus undulata, adults 

 emerging Api-il 5 and 26. ISIore wore taken near ISfagdalena on 

 Q. gnsea, the galls containing adults in December, flies emerging 

 March 9, April 6, and many April 26. They were also taken on 

 (^. undiilata in Nogal Canyon south of Socorro and at Kingston 

 on Q. gnsea. The species was previously known in the United 

 States only from Q. grisea and from Arizona. 



