210 



NEW YORK STATE MUSEUM 



June, at which time adults may be obtained in considerable numbers. 

 It is presumable that the insects continue to develop upon the 

 young foliage at least, till the latter part of summer. 



Gall. The galls of this species are oval, about 4 or 5 mm long» 

 usually somewhat thickened and when well developed dark brown 

 or even jet black. Several dull orange larvae occur in a gall. For 

 a colored illustration, see Museum Bulletin 175, plate 1, figure 16. 

 Larva. Length 1.25 mm, stout, pale yellowish. Head small, 

 narrowly rounded apically; antennae small, uniarticulate, slightly 

 swollen distally; breastbone stout, bidentate, broadly expanded 

 subapically, slightly so distally; skin smooth; posterior extremity 

 broadly rounded, unarmed. 



Male. Length 1.5 mm. Antennae light brown; 

 16 segments, the fifth with a length about three- 

 fourths its diameter; the two distal segments 

 frequently fuse to form a nearly oval, deeply con- 

 stricted double segment. Palpi; basal segment 

 short, subquadrate, the second three times as long, 

 conical. Mesonotum dark brown or black, nar- 

 rowly margined anteriorly and laterally with yel- 

 lowish white, sparsely yellow haired posteriorly. 

 Scutellum thickly clothed with short, yellowish 

 scales ; postscutellum dark brown, lighter anteriorly. 

 Abdomen dark brown with the segments sparsely 

 and irregularly margined posteriorly with whitish 

 scales. Wings hyaline, costa dark brown, the third 

 vein uniting with costa at the middle. Halteres 

 light brown. Anterior legs; coxae light yellowish, 

 dark brown vent rally, tibiae and tarsi dark brown, 

 the segments of the latter yellowish white basally ; 

 tennal segments the middle legs similar except for the well defined 

 >fmale greatly Dasa l band on the tibiae; the posterior legs with 

 the first tarsal segment white, the second to fourth 

 segments narrowly banded, the fifth yellowish; 

 claws stout, strongly curved. Genitalia ; basal clasp 

 segment short, stout, terminal clasp segment long, 

 slender. Dorsal plate short, broad, deeply and rather broadly emargi- 

 nate; ventral plate narrow, narrowly rounded. Harpes stout at base, 

 tapering, narrow. 



Female. Length 1.5 mm. Antennae light brown; 16 segments, 

 the fifth with a length about three-fourths its diameter; terminal 

 segment slightly produced, narrowly oval. Palpi; the basal segment 

 fusiform, the second slightly longer, tapering, subacute. Ovipositor 

 short, the terminal lobes strongly constricted basally, suborbicular. 

 Color and other characteristics as in the opposite sex. Redescribed 

 from the types. Type Cecid. ai354. 



Fig. 38 Aster- 

 omyia car- 

 bo n i f e r a , an- 

 te 

 of 



enlarged (au- 

 thor's illustra- 

 tion) 





