216 Journal New York Entomological Society. [Vol. xxi. 



ish black, the submedian lines sparsely haired. Scutellum reddish brown, post- 

 scutellum darker. Abdomen sparsely haired, yellowish red, the dorsal sclerites 

 dark reddish brown. Genitalia fuscous. Wings hyaline, costa dark brown. 

 Halteres yellowish basally, reddish apically. Coxje, femora and tibiae fuscous 

 yellowish, the tarsi somewhat darker ; claws slender, unidentate, the pulvilli as 

 long as the claws. Genitalia : basal clasp segment long, slender ; terminal 

 clasp segment short, stout ; dorsal plate long, broad, deeply and triangularly 

 emarginate, the lobes divergent, tapering, narrowly rounded ; ventral plate 

 rather long, moderately broad, deeply and roundly emarginate, the lobes nar- 

 rowly triangular, obtuse and sparsely setose apically. Harpes thickly setose 

 and minutely dentate apically. 



Female. — Length 1.75 mm. Antennae extending to the third abdominal 

 segment, sparsely haired, dark brown; 15 or 16 sessile segments, the fifth with 

 a length J4 greater than its diameter, the terminal segment either reduced and 

 conical or compound and composed of two closely fused and greatly reduced 

 segments. Mesonotum shining black. Scutellum and postscutellum fuscous 

 orange. Abdomen sparsely haired, mostly deep red, the dorsal sclerites slightly 

 fuscous. Halteres yellowish, the fuscous yellowish, ovipositor as long as the 

 abdomen, the terminal lobes slender, with a length about four times the width, 

 sparsely setose. Otherwise as in the male. Type Cecid 02359. 



Dasyneura parthenocissi Stebb. 



1906. Jarvis, T. W., Ent. Soc. Ont., 32d Rept., pp. 68-69, PI. D. fig. 7 



(without name). 

 1910. Stebbins, F. A., Springf. Mus. Nat. Hist. Bull. 2, p. 44 (CecfJo;«yia.?). 



The above name was proposed on the basis of the earHer descrip- 

 tion by Jarvis, and while there may be some question as to the validity 

 of this earlier characterization, the following descriptions of the vari- 

 ous stages will establish the specific name. 



The midges described below were reared from a tumid vein swell- 

 ing very abundant on Virginia creeper, Pscdcra quinquefolia, in early 

 June at Nassau, N. Y., and remarkable because of the pronounced 

 ridges or carinae generally present. These galls are presumably iden- 

 tical with a more common type of smooth vein swelling known to be 

 widely distributed in New York state and which has been recorded 

 from Guelph, Canada, by T. D. Jarvis. The white or reddish larvae 

 producing the gall vary in numbers somewhat in proportion to the size 

 of the deformity. They desert the swellings early and evidently hiber- 

 nate at the surface of the soil in earth, or debris-walled cocoons and 

 fly presumably some time in the spring. 



