42 JouRXAL Xew York Entomological Society. [Vol. xix. 



Genus STEFANIELLA Kieff. 1897, type S. atrit^licis Kieff. 

 Subcosta and third vein very near costa ; the third and fourth 

 antennal segment.s not coalescing, separated by at lea.st a rudimentary 

 constriction. Palpi biarticulate, the claws toothed or simple. Europe. 



Genus APLONYX Perez 1908, type A. chcuopodii Perez. 

 Separated from the preceding genus by the uniarticulate palpi and 

 from the following genus by the mouth-jjarts not being produced and 

 the simple claws. Europe. 



Genus BALDRATIA Kieff. 1897, type B. salicornia: Kieff. 

 Allied to the two preceding genera though easily separated there- 

 from by the uniarticulate palpi and the distinctly produced mouth- 

 parts. Europe. 



Genus LASIOPTERA Meign. 1818, type Cecidomyia albipcnnis Meign. 



Venation as in the preceding genera, the third and fourth antennal 

 segments coalescing or closely fused, the pulvilli well developed; 

 palpi tri- or quadriarticulate; three long veins, the fifth forked some 

 distance from its base. Synonym : Diomyza Westw. Europe, Africa, 

 North and .South America, Australia. 



Genus NEOLASIOPTERA Felt 1908, type Lasioptcra viti>iea Felt. 

 Separated from the preceding genus by the four simple, long 

 veins, the sixth arising from the base of the wing. North America. 



Genus MEUNIERIELLA Kieff. 1905, type M. dalcchampia: Rubs. 

 This genus appears to be closely related to, if not identical with 

 Lasioptcra Meign. Synonym: Mcimcria Riibs., not Kieffer. South 

 America. 



Genus ASTEROMYIA Felt 1910, type Lasioptcra carbonifera Felt. 

 Venational and antennal characters similar to those of Lasioptcra. 

 Separated therefrom by the uni- or biarticulate palpi. North America. 



Genus CLINORHYNCHA H. Lw. 1850, type Lasioptcra chrysanthemi H. Lw. 

 Wmation nearly as in Lasioptcra; antennal segments 10-13, easily 

 recognized by the greatly produced mouth-parts and the prolonged 

 thorax. Europe, North America. 



Genus ACORHYNCHUS Rond. 1846, type A. lougicollis Rond. 

 This genus possesses all the characters of the preceding except 



