186 NEW YORK STATE MUSEUM 
subapically ; coxae yellowish; femora, tibiae and tarsi light straw; claws 
long, slender, strongly curved, the pulvilli rudimentary or wanting. 
Genitalia; basal clasp segment long, lobed basally; terminal clasp 
segment slender, somewhat swollen at the base; dorsal plate long, 
broad, deeply and narrowly incised, the lobes broadly rounded 
laterally; ventral plate long, slender, deeply and broadly incised, 
the lobes long, slender, subacute; style stout at base, tapering. 
Dype Cecid: ar571- 
Mycodiplosis populifolia Felt 
1908 Felt, E. P. N. Y. State Mus. Bul. 124, p. 400 
The male of this light yellowish species was reared September 3, 
1907 from bulletlike swellings at the base of poplar leaves, 
Pepulus tremuloides, taken at Albany, N. Y- 
Gall. 3 to4mm in diameter, clustered, dilated, 
light monothalamous swellings at the base of 
poplar leaves. (Plate 5, fig. 1) 
Male. Length 1 mm. Antennae one-third 
longer than the body, rather thickly haired, pale 
yellowish; 14 segments, the fifth with stems two 
and one-half and four times their diameters; 
terminal segment, distal enlargement broadly 
oval, apically a narrow spindle-shaped append- 
age. Palpi; the first segment stout, with a 
length nearly twice its diameter, the second 
rather broad, with a length three times its 
diameter, the third shorter and more slender 
than the second and the fourth one-half longer 
and more slender than the third; face slightly 
fuscous. Mesonotum fuscous. Scutellum, post- 
scutellum and abdomen light yellowish except 
the two basal segments of the latter, which are 
reddish. Wings hyaline, costa yellowish. Hal- 
teres yellowish transparent. Legs a light yel- 
lowish, the tarsi slightly fuscous; claws long, 
slender, evenly curved, the pulvilli about one- 
Fig.79 Mycodi- half the length of the claws. Genitalia; basal 
plosis popu- clasp segment long, slender, a rounded lobe at 
lifolia, fifth an- the internal basal third; terminal clasp segment 
tennal segment of long, slender; dorsal plate long, broad, deeply 
male (enlarged, orig- and narrowly -incised, the lobes irregularly 
inal) rounded; ventral plate slender, deeply and 
roundly emarginate, the emargination with a 
length four times its width, the lobes long, slender; style long, 
slender. 
Female. Length 1mm. Antennae about three-fourths the length 
of the body, sparsely haired, yellowish; 14 segments, the fifth with 
a stem about three-fourths the length of the basal enlargement, 
which latter has a length two and one-half times its diameter; term- 

Peleg 1 
