26o NEW YORK STATE MUSEUM 



July 13th. Doctor Thompson states that these aster galls are 

 special favorites with inquilines, and adds that he has nearly always 

 found two distinct larvae in the stem gall of Aster novae- 

 a n g 1 i a e. The insect obtained most abundantly from this gall 

 was determined as Neolasioptera ramuscula Beutm. It is 

 possible that the Rhopalomyia is an inquiline, since it occurred 

 in very small numbers. 



Male. Length 2.5 mm. Antennae probably extending to the 

 fourth abdominal segment, sparsely haired, dark brown; 18 segments, 

 the fifth with a stem three-fourths the length of the basal enlarge- 

 ment, which latter has a length twice its diameter; terminal segment 

 with the basal portion produced, narrowly oval, acute distally. Palpi; 

 a single rather stout, fusiform segment. Mesonotum reddish brown, 

 darker laterally, the submedian lines thickly clothed with long 

 hairs. Scutellum fuscous yellowish, postscutellum yellowish. 

 Abdomen reddish brown with the segments margined posteriorly 

 with long hairs. Wings hyaline, costa dark brown; halteres whitish 

 transparent basally, fuscous apically. Legs a variable dark brown; 

 claws slender, strongly curved, the pulvilli as long as the claws. 

 Genitalia; basal clasp segment long, stout; terminal clasp segment 

 long, greatly swollen; dorsal plate very short, broad, slightly, broadly 

 and triangularly emarginate ; ventral plate long, stout, sub truncate 

 or slightly emarginate. Harpes stout, the dorsal margin strongly 

 chitinized, irregularly rounded. Type Cecid. ciioya. 



Rhopalomyia bulbula Felt 



1908 Felt, E. P. N. Y. State Mus. Bui. 124, p. 365, 366 



1909 Ottawa Nat., 22: 249 



The gall of this species occurs on goldenrod near the ground, it 

 resembling very much small bulblets attached to the side of the 

 plant. It was collected and midges reared by the late Dr M. T. 

 Thompson of Clark University, Worcester, Mass., who states that 

 the flies appear very similar to those of R. thompsoni, though 

 they are paler and less hairy. It may prove identical with 

 R. h i r t i p e s 0. S. 



Gall. The gall is about 6 mm long, 2.5 mm in diameter, irregularly 

 cylindric, slightly curved and usually green with darker stripes. 

 It is clustered at the surface of the ground and is a typical budlike 

 growth. (Plate n, figure i.) 



Male. Length 2.5 mm. Antennae as long as the body, sparsely 

 haired, pale yellowish; 18 segments, the fifth with a stem about three- 

 fourths the length of the basal enlargement, which latter tapers basally 

 and apically, has a length about one-half greater than its diameter; 

 terminal segment slightly reduced, broadly oval. Palpi; probably 

 one segment; face fuscous yellowish. Mesonotum dark brown, the 

 rather distinct submedian lines and posterior median area yellowish. 



