REPORT OF THE STATE ENTOMOLOGIST Hjl6 [35 



on the ground, the adults appearing in the vicinity of Albany the 

 latter part of June and in early July. Two specimens were also 

 obtained October 2d but these latter must be regarded as 

 abnormal. 



Gall. This gall is more or less variable in appearance, attaining 

 maturity the latter part of September or in early October. The 

 individual galls are more or less irregularly ridged, light brown, 

 about 1 cm long, sometimes two or three are fused together to form 

 a more or less irregular mass 2 or 3 cm in length. The greater 

 part of the swelling is on the under surface of the leaf and invariably 

 along the midrib or occasionally on the lateral veins, the galls on 

 the latter being decidedly smaller. The larger galls are .5 to .6 

 or .7 cm in diameter, about .5 cm in thickness and show on the 

 upper surface as slight swellings accompanied by more or less distinct 

 crumpling of the leaf and a rather characteristic purplish red dis- 

 coloration. The larger galls are usually at the base of the leaflets 

 and rarely or never occur on the petiole. (For a colored illustration 

 see Museum Bui. 175, pi. 4, fig. 3, 3a) 



Larva. Length 2.5 mm, slender, pale orange. Head small, 

 antennae slender; breastbone stout, bidentate, tapering distally; 

 skin rather coarsely shagreened; posterior extremity broadly 

 rounded. 



Male. Length 1.75 mm. Antennae dark brown; 18-19 segments, 

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

 segment somewhat produced, oval. Palpi; the first segment rather 

 short, stout, oval, the second one-half longer, sub rectangular, the 

 third one-fourth longer than the second, more slender and the fourth 

 one-half longer than the third, more slender, face fuscous, eyes 

 large, black. Mesonotum very dark brown, the anterior margin, 

 specially laterally, bordered with silvery white scales. Scutel- 

 lum reddish brown, rather thickly clothed with yellowish setae, 

 postscutellum a little darker. Abdomen dark brown, the basal 

 segment clothed dorsally with silver} 7 white scales, the second, 

 third and fourth segments margined posteriorly with silvery white 

 scales, which latter are somewhat produced on the median line 

 and obsolete laterally. Wings hyaline, costa a rich dark brown 

 with a whitish stigmatal spot near the middle, the third vein uniting 

 with the margin at the basal half. Halteres yellowish basally, 

 yellowish white apically. Legs dark brown with the distal extremity 

 of the femora and the extremities of the tibiae narrowly banded 

 with yellowish, the first segment, the basal three-fourths of the 

 second and the basal portion of the third and fourth segments of 

 the posterior tibiae yellowish, the distal tarsal segments brown. 

 In another specimen the posterior tarsal segments are a nearly 

 uniform light yellowish, except the last, "which is dark brown; claws 

 long, slender, evenly curved, with a long, well developed tooth 

 basally, pulvilli as long as the claws. Genitalia; basal clasp segment 

 long, slender, obliquely truncate; terminal clasp segment short, 

 slender, tapering; dorsal plate short, broad, deeply and triangularly 



