REPORT OF THE STATE ENTOMOLOGIST I907 317 



Oligarces Mein. 

 Only one American representative is known ; namely, O . 

 noveboracensis Felt. This species was taken in July and 

 presumably bred from material brought into the office. 



Brachyneura Rond. 



This peculiar g^nus is easily separated from Lasioptera, which 

 it closely resembles in a general way, by the densely scaled fuscous 

 wings [pi. 33, fig. 6]. 



Two American species of Brachyneura have been reared. One, 

 B. e u p a t o r i i , was bred presumably from an oval swelling on 

 E u p a t o r i u m p e r f o 1 i a t u m. The other species, B. v i t i s 

 was reared from a jar containing the familiar Lasioptera 

 V i t s galls on grape and presumably came from this plant. 



Key to species 



a 5th antenna! segment with a length twice its diameter; scutellum yel- 

 lowish 

 b Antennae composed of 12 segments ; femora and tibia silvery grey. 



Bred from boneset, Eupatorium perfoliat'um 



eupatorii n. sp., C. ai349 

 bb Antennae composed of 11 segments, femora and tibiae dark brown 



V i t i s n. sp., C. aii65d 



aa 5th antenna! segment with a length 3 times its diameter, scutellum black, 



legs uniform fuscous or black americana Felt, C 734 



LASIOPTERARIAE 

 This group presents a very characteristic appearance as the 

 adults are almost invariably a dark brown and more or less orna- 

 mented with silvery white. The antennal segments are cylindric, 

 sessile and vary greatly in number. The wings have the anterior 

 margin thickly scaled and the first two long veins are very close to 

 the anterior border, except in the somewhat aberrant genus Trot- 

 teria, and to a less extent in the peculiar Camptoneuromyia. A large 

 proportion of the species breed in stem galls on woody or her- 

 baceous plants, though the genus Baldratia exhibits a marked pref- 

 erence for the characteristic blister galls of certain compositae. The 

 one Camptoneuromyia reared, C . a d h e s a Felt, breeds in ovate 

 galls between adherent leaves of Solidago canadensis or 

 S. serotina and also in a loose apical bud gall. The latter 

 may possibly be only a modified form of the more common ad- 

 herent gall. The last named is also inhabited by Asphondylia 

 monacha O. S. The transformations in this group appear 

 to occur invariably in the tissues of the host plant. 



