23O NEW YORK STATE MUSEUM 



fig. 2) basal clasp segment short, stout; terminal clasp segment 

 with the basal two-thirds greatly swollen; dorsal plate short, stout, 

 deeply and triangularly emarginate; ventral plate short, stout, nar- 

 rowly rounded. Harpes short, stout, tapering, irregularly dentate. 



Female. Length 2 mm. Antennae dark brown; 18 segments, 

 the fifth with a length a little greater than its diameter; terminal 

 segment broadly oval. Palpi; the first segment short, irregularly 

 subquadrate, the second a little longer, swollen at the basal third, 

 broadly rounded. Mesonotum dark brown with submedian lines 

 sparsely clothed with silvery hairs. Scutellum dark reddish brown, 

 postscutellum and abdomen dark brown, incisures deep carmine, 

 ovipositor pale orange. Pleurae brokenly clothed with quadrate 

 patches of silvery white scales separated by small patches of dark 

 brown ones, venter suffused with silvery white scales; halteres 

 fuscous yellowish basally, stem pale yellowish, club fuscous basally, 

 semi transparent apically. Coxae dark brown, clothed laterally 

 with silvery white; femora pale yellowish basally, fuscous apically, 

 tibiae dark brown, narrowly ringed with pale yellowish apically, 

 tarsi with the basal segments dark brown, the distal ones lighter. 

 Ovipositor probably about two-thirds the length of the body, the 

 terminal lobes short, stout, broadly rounded. Type Cecid. 650. 



Asteromyia laeviana Felt 



1907 Felt, E. P. N. Y. State Mus. Bui. no, p. 108-9; separate, p. 12 



(Choristoneura) 



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



1910 Econ. Ent. Jour., 3:349 



1915 Econ. Ent. Jour., 8:406 



The midge was reared at -Albany, N. Y:, from a yellowish blister 

 gall on the leaves of Aster laevis, the adults appearing the 

 latter part of September 1906. 



Gall. A greenish yellow blister gall about 1.75 cm in diameter, 

 the under surface is papery white. For a colored illustration see 

 Museum Bulletin 175, plate 1, figures 12, 12a and 19. 



Larva. Length 2 mm, stout, pale orange. Head small, tapering; 

 antennae small, uniarticulate ; breastbone rudimentary or wanting; 

 skin finely shagreened; posterior extremity broadly rounded, finely 

 papillate. 



Male. Length 1.6 mm. Antennae dark brown; 14 segments, 

 the fifth with a diameter equal to its length, the two terminal seg- 

 ments fused, separable only by a light constriction. Palpi; one 

 elongate segment, obliquely truncate apically; face reddish brown, 

 eyes black, large, margined posteriorly with pale yellowish scales. 

 Mesonotum dark brown with broad, submedian stripes thickly 

 clothed with short, yellowish scales. Scutellum dark brown, post- 

 scutellum reddish brown. Abdomen dark brown with the incisures 

 and pleurae pale yellowish red, genitalia dark brown. Wings hyaline, 

 costa dark brown, the third vein uniting with the ccsta at the basal 

 half; halteres pale yellowish basally, whitish transparent apically. 





