136 NEW YORK STATE MUSEUM 
postscutellum fuscous yellowish. Abdomen fuscous yellowish with 
the second, third and fourth abdominal segments fuscous, rather 
thickly clothed with fine hairs. Wings hyaline, costa pale brown; 
halteres pale yellowish basally, fuscous apically. Legs a nearly 
uniform dark brown, lighter ventrally; claws long, slender, strongly 
curved. Genitalia (pl. 20, fig. 4); basal clasp segment long, slender, 
obliquely truncate; terminal clasp segment long, swollen basally; 
dorsal plate broad, deeply and narrowly incised, the lobes narrowly 
rounded; ventral plate broad, narrowly rounded; style stout, short. 
Type Cecid. 465. 
Lestodiplosis populifolia Felt 
1908 Felt, E.P. N. Y. State Mus. Bul. 124, p. 408 
1915 ———— N.Y. State Mus. Bul. 175, pl. 3, fig. 4 
1918 —————— _ N.Y. State Mus. Bul. 200, p. 38 
This fuscous yellowish male was reared July 22, 1907 from a 
marginal leaf roll on poplar, Populus tremuloides, taken 
at Albany, N. Y. 
Gall. A marginal leaf roll 1o mm long, 2 mm wide, slightly dis- 
torting and shortening that side of the leaf. ; 
Male. Length 1.5 mm. Antennae one-fourth longer than the 
body, thickly haired, light brown, the basal segments yellowish; 
fourteen segments, the fifth with stems twice their diameters; distal 
node with a length one-half greater than its diameter. Palpi; the 
first segment short, stout, subquadrate, the second a little longer, 
narrowly oval, the third a little longer and more slender than the 
second and the fourth one-half longer and more slender than the 
third. Mesonotum dark brown, the submedian lines fuscous yel- 
lowish. Scutellum reddish orange, postscutellum a little darker. 
Abdomen fuscous yellowish, the distal segments yellowish. Geni- 
talia fuscous. Wings hyaline, costa dark brown; halteres whitish 
transparent. Legs a nearly uniform dark brown; claws long, slender, 
evenly curved, the pulvilli nearly as long as the claws. Genitalia; 
basal clasp segment long, slender; terminal clasp segment long, 
slender; dorsal plate short, stout, deeply and triangularly emarginate, 
the lobes narrowly rounded; ventral plate a little longer, slender, 
broadly rounded. Type Cecid. ar4go. 
Lestodiplosis fraxinifolia Felt 
1908 Felt, E.P. N.Y. State Mus. Bul. 124, p. 408 
1918 N. Y. State Mus. Bul. 200, p. 179 
The fuscous yellowish male was reared July 23, 1907 from badly 
rolled ash, Fraxinus, leaflets taken by L. H. Joutel at Newfoundland, 
Neve 
Gall. The whitish larvae occurred in badly rolled, young ash 
‘leaflets. 

