124 NEW YORK STATE MUSEUM 



and June 12, 1886. Both sexes were reared in this office in May 

 19 to from material collected by Miss E. G. Mitchell at Washington, 

 D. C, September 3, 1909. It has also been recorded from North 

 Carolina, Staten Island, New York City and Indiana. 



Gall. The floral deformity occasioned by this species has not 

 been described. The gall on the petiole and midrib is about 6 mm 

 long, oval, greatly distending the midrib and showing above and 

 below. It is green, sometimes tinged with red, fleshy within and 

 contains one- larva. 



Larva. Length 2.5 mm, yellowish. Head small; antennae long, 

 tapering ; breastbone bidentate with a minute median tooth, becoming 

 obsolete posteriorly. Skin coarsely shagreened, posterior extremity 

 broadly rounded and with a few short, tapering spines. 



Male. Length 1.5 mm. Antennae light brown; 18-21 segments, 

 the fifth with a length a little greater than the diameter; terminal 

 segment slightly produced, broadly oval. Palpi; the first segment 

 short, stout, slightly expanded distally, the second subrectangular, 

 with a length over twice its diameter, the third a little longer and 

 more slender, the fourth one-half longer than the third, more slender, 

 mouth-parts slightly produced. Mesonotum dark brown, the 

 submedian lines indistinct. Scutellum and postscutellum reddish 

 brown, basal abdominal segment white, the second to fourth seg- 

 ments rather broadly margined posteriorly with silvery white 

 markings, produced laterally, the fifth and sixth segments narrowly 

 margined posteriorly; genitalia fuscous. Wings hyaline, costa 

 dark brown, the third vein uniting with costa at the basal half. 

 Halteres yellowish white. Coxae, femora and tibiae mostly pale 

 yellowish, tarsi mostly yellowish, the second and third segments 

 brown apically, the fourth and fifth dark brown; claws long, slender, 

 evenly curved, the pulvilli about as long as the claws. Genitalia; 

 basal clasp segment long, terminal clasp segment with the basal 

 third swollen; dorsal plate broad, deeply and triangularly emarginate, 

 the lobes narrowly rounded, ventral plate short, broad, narrowly 

 rounded. Harpes slender, tapering, tuberculate; style long, slender. 



Female. Length 1.5 mm. Antennae light brown; 23-25 segments, 

 the fifth with a length a little less than its diameter; terminal seg- 

 ment slightly produced, broadly oval. Palpi; the first segment 

 short, stout, sub quadrate, the second twice the length of the first, 

 rather slender, the third a little longer- and more slender than the sec- 

 ond, the fourth longer and more slender than the third. Mesonotum 

 shining, reddish. Scutellum and postscutellum fuscous yellowish. 

 Abdomen presumably with the basal segment whitish, the others 

 dark brown. Halteres fuscous yellowish. Legs a variable fuscous 

 yellowish, apparently badly rubbed, the distal tarsal segment some- 

 what darker; claws long, slender, strongly curved, the pulvilli as 

 long as the claws. Ovipositor about as long as the abdomen, the 

 terminal lobes, narrowly oval. Type Cecid. 1058, 1059, a20i4. 



