232 NEW YORK STATE MUSEUM 



postscutellum and abdomen dark brown, almost black, the incisures 

 of the latter a dusky reddish, the dorsum of the eighth segment 

 and the ovipositor fuscous yellowish; laterally, though hardly 

 ven trail y there is a broken band of five somewhat conspicuous 

 subquadrate patches of silvery white scales; venter sparsely clothed 

 with silvery white scales. Wings hyaline, costa black, the third 

 vein uniting with costa near the middle. Legs black; claws long, 

 stout, strongly curved, the pulvilli as long as the claws. Ovipositor 

 about one-half the length of the abdomen, the terminal lobes rather 

 short, broad, broadly rounded. Type Cecid. a 1430. 



Asteromyia divaricata Felt 



1908 Felt, E. P. N. Y. State Mus. Bui. 124, p. 330 (Baldratia) 

 1910 Econ. Ent. Jour., 3:348 



This species was reared April 6, 1908 at Albany from a large 

 blister gall on the leaves of Aster divaricata. The larvae 

 winter in the galls. One leaf may produce 18 to 20 adults. The 

 white exuviae contrast strongly with the blackened leaves. 



Gall. The blister galls from which this species was reared are large 

 and oval, about 1.2 cm in diameter and with a pinkish tinged aureola, 

 especially on the under surface. In the spring they are much darker 

 and nearly unicolorous. 



Female. Length 2 mm. Antennae dark brown, yellowish basally ; 

 16 segments, the fifth with a length about twice its diameter, the 

 terminal segment produced, with a length about three times its 

 diameter. Palpus, one rather stout, fusiform segment having a 

 length about twice its diameter. Face , fuscous yellowish. 

 Mesonotum dark reddish - brown and rather thickly and evenly 

 clothed with yellowish setae. Scutellum reddish brown with whitish 

 setae apically; postscutellum fuscous yellowish. Abdomen dark 

 brown, each segment sublaterally with silvery white spots and 

 rudimentary white markings posteriorly; pleurae a variable reddish 

 brown; ovipositor a pale orange; venter clothed with silvery scales. 

 Wings hyaline, costa black, discal spot whitish, the third vein uniting 

 with costa near the basal half; halteres yellowish, fuscous subapically. 

 Coxae and base of femora fuscous yellowish; femora distally, tibiae 

 and tarsi a nearly uniform dark brown; claws long, slender, evenly 

 curved, the pulvilli distinctly shorter than the claws. Ovipositor 

 about one-half the length of the abdomen, the terminal lobes short, 

 broad, suborbicular. 



Male. Length 2 mm. Antennae fuscous yellowish; 16 segments. 

 Palpi uniarticulate, fusiform, with a length over twice the diameter. 

 Mesonotum dark brown, with scattering, yellowish setae upon its 

 surface, the submedian lines thickly clothed with yellow setae. 

 Scutellum dark brown, with a few white scales apically, postscutellum 

 light fuscous yellowish. Abdomen dark brown, the basal segment 

 laterally and posteriorly sparsely margined with white scales, the 

 distal segment nearly naked, deep orange and with a few dark 

 brown, scattering, silvery white scales dorsally; pleurae yellowish; 





