22 PROCEEDINGS OF THE NATIONAL MUSEUM voi . G8 



DIPLOLEPIS CAROLINA (Ashmead) 



Described from two adults from Asheville, N. C, from galls on 

 Quercus alba. The writer reared two flies which agree Vv'itli the 

 types from galls collected on Q. stellata at Ironton, Mo. in October, 

 1917, the flies emerging June 1, 1918. The galls occur in clusters of 

 2-4 on the midrib and nearlj^ always on wpper side of the leaf but 

 sometimes on the lower. They are 5-6 mm. in diameter, with a 

 smooth surface just visible with hand lens between clumps of stel- 

 late hairs. The galls were seen at Hoxie, Hot Springs, and Tex- 

 arkana, Ark. ; Palestine, Houston, Boerne, College Station, and 

 Arlington, Tex. ; Madison and Ocala, Fla. What seems to be the same 

 gall occurs at Boerne and Austin, Tex., on shin oak, Q. hreviJoha, 

 and on Q. chafmani at Carabelle, Clearwater, St. Petersburg, and 

 Daytona, Fla. 



DIPLOLEPIS CAVA, new species 



Female. — Ked, anterior and lateral lines and eyes black, middle 

 of face, metanotum, parts of mesopleura, dorsal portion of third 

 tergite, and adjacent parts of second more or less infuscated. Head 

 from aboA^e as broad as thorax, cheeks not broadened behind eyes, 

 vertex granulate; from in front broader than high, malar space .43 

 ej'e with faint strite, antenna^ hairj', 14-segmented, lengths as 

 (scape) 17 (width 9) : 7:26(6) :20: 17: 14: 12: 11:9: 8:8:7:7:9 (6). 

 Mesoscutum smooth, uniformly covered with setigerous punctures, 

 the pubescence not dense enough to hide sculpture, parapsidal grooves 

 deep, smooth, percurrent, anterior and lateral lines bare, smooth. 

 Scutellum with two distinct oblique smooth pits at base, disk almost 

 smooth in center, the rest rugose. Carinae on propodeum bowed 

 out enclosing a smooth area broader than high. Wing pubescent and 

 ciliate, veins brown, heavy, first abscissa of radius scarcely angled, 

 second curved up toward wing margin in distal third and enlarged 

 at end a little back from margin, areolet reaching about one-sixth 

 wa}'^ to basal, cubitus not quite reaching basal, a cloud in base of 

 third cubital cell back of areolet and three groups of spots in distal 

 end, the middle largest. Hind tibia much longer than tarsus, claws 

 with a weak tooth. Abdomen longer than head and thorax, length 

 to height to width as 36 : 29 : 23, lengths of tergites along dorsal 

 margin jjs 104:10:3:0:0:7. hairy patches at base of second, its 

 hind margin at angle of 45°, ventral valves oblique, ventral spine 

 hairy, in side view four times as long as broad, broader from below 

 than from side. Using width of head as a base the length of 

 mesonotum ratio is 1.3, antenna 2.2, ovipositor 1.8, Aving 3.4. Length, 

 2.9-3.9 mm. Average of 9 pinned specimens 3.4 mm. 



