44 Journal Xew York Entomological Society. [Vol. xix.. 



Genus LASIOPTERYX Westw. 1840, type L. obfuscala Meign. 

 Wings fuscous, the membrane scaled, the female ovipositor shorty 

 the circumfili strongly produced in the male much as in Bremia. 

 Synonyms: Diomyza Shin. 1864; Lepidomyia Kieff. 1894; Lcdomyia 

 Kieff. 1895. Europe, North America. 



Genus ARNOLDIA Kieff. 1895, type Cecidomyia quercus Binn. 

 Antennal segments 12 to 13, sessile; palpi quadriarticulate. Sepa- 

 rated from the following genus by the sessile antennal segments and 

 nearly straight third vein uniting with costa near the apex. Synonym : 

 Janetia Kieff. 1896. Europe. 



Genus NEUROMYIA, new genus, type Anwldia minor Felt. 



Antennal segments 11 or 12. the fifth of the male with a stem' 

 three fourths the length of the cylindric basal enlargement. Distin- 

 guished from the preceding genus by the third vein being strongly 

 curved and uniting with costa at the distal fourth and the stemmed 

 antennal segments in the male. North America. 



Genus MACROLABIS Kieff. 1892, type Cecidomyia pilosella Binn. 



Antennal segments 11 to 12, rarely 13-14, sessile or subsessile; 

 palpi quinquearticulate; ovipositor as long as the body. Separated 

 from the two preceding genera by the very stout basal clasp segment 

 of the male. Europe. 



Genus DRYOMYIA Kieff. 1897, type D. circinans Giraud. 

 Wing venation nearly as in the three preceding genera. Antennal 

 segments 18-20: palpi triarticulate. Europe, North America. 

 Genus CYSTIPHORA Kieff. 1892, type C. pilosellcc Kieft". 

 Antenna with 13 or 14 antennal segments, the fifth of the male 

 with a stem as long as the cylindric basal enlargement. Female an- 

 tennal segments sessile or subsessile ; palpi triarticulate; ovipositor 

 basally stout, retractile, the distal portion chitinized, broad basally^ 

 acute apically. Europe, North America. 



Genus RHIZOMYIA Kieff. 1897, type R. perplcxa Kieff. 

 Antennal segments 12, the fifth of the male with a stem as long: 

 as the cylindric basal enlargement, those of the female subsessile; 

 palpi triarticulate; terminal clasp segment of the male very long, 

 slender, the ovipositor short, lobed. Synonym: Coccomorpha RUbs, 

 1899. Europe, North America. 



