i86 



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. 

 Type Cecid. aisyi. 



Mycodiplosis populifolia Felt 



1908 Felt, E. P. N. Y. State Mus. Bui. 124, p. 400 



The male of this light yellowish species was reared September 3, 

 1907 from bulletlike swellings at the base of poplar leaves, 

 Populus tremuloides, taken at Albany, N. Y. 



Gall. 3 to 4 mm 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- 

 half the length of the claws. Genitalia; basal 

 clasp segment long, slender, a rounded lobe at 

 the internal basal third; terminal clasp segment 

 long, slender; dorsal plate long, broad, deeply 

 and narrowly incised, the lobes irregularly 

 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 1 mm. 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- 



Fig. 79 M y c o d i - 

 plosis popu- 

 lifolia, fifth an- 

 tennal segment of 

 male (enlarged , orig- 

 inal) 



