212 



NEW YORK STATE MUSEUM 



Asteromyia socialis Felt 



1908 Felt, E. P. . N. Y. State Mus. Bui. 124, p. 328 (Baldratia) 



1909 Ottawa Nat., 22:248 (Baldratia) 



A male referable to this species was reared at Albany, N. Y., July 

 26, 1907 from a jar containing Solid a go canadensis leaves 

 bearing a number of adherent type of galls inhabited by Asphon- 

 dylia monacha O. S. and Dasyneura adhesa Felt. 



. Male. Length 1.25 mm. Antennae light yellowish; 13 segments, 

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

 segment produced, sometimes fused with the preceding, narrowly 

 rounded. Palpi; one small, narrowly oval segment; face light 

 yellowish. Mesonotum light fuscous yellow, the submedian lines 

 sparsely haired. Scutellum and postscutellum light fuscous yellow. 

 Abdomen light fuscous yellow, the distal segments light orange, 

 sparsely and irregularly clothed dorsally with dark brown scales; 

 genitalia yellowish transparent. Wings hyaline, costa dark brown, 

 the third vein uniting with costa at the basal half ; halteres yellowish 

 basally, light fuscous apically. Coxae and femora mostly pale 

 yellowish; tibiae and tarsi a variable dark brown; claws long, slender, 

 evenly curved, the 'pulvilli a little shorter than the claws. Genitalia ; 

 basal clasp segment short, broad; terminal clasp segment swollen 

 at the base; dorsal plate short, broad, deeply 

 and triangularly emarginate ; ventral plate short, 

 broad, narrowly rounded. Harpes slender, short. 

 Type Cecid. a 1568. 



Asteromyia modesta Felt 



1907 Felt, E. P. N. Y. State Mus. Bui. no, p. 163 



(Choristoneura) 



1908 N. Y. State Mus. Bui. 124, p. 328 



(Baldratia) 



This species was repeatedly obtained at Albany, 

 N. Y., from small, oval swellings appearing much 

 like arrested buds on the stems of horseweed, 

 Erigeron canadensis. One adult was 

 reared August 6th and the exuviae found protrud- 

 ing from an apparently normal leaflet. P o 1 y g - 

 notus angulatus Ashm. , T o r y m u s 

 ostensackenii D. T. and Eurytoma species 

 were reared, possibly from this gall midge. 



Exuviae. Length 2 mm, rather stout, mostly 

 whitish transparent, the short, stout antennal 

 cases and the ventral plates at their base some- 

 what fuscous. The antennal cases are rather 

 strongly bidentate at the internal basal angles. 



Fig. 39 Aster- 

 omyia mo- 

 desta, gall, nat- 

 ural size (original) 



