no. 2072. NEW SPECIES OF GALL MIDGES— FELT. 197 



Table for the separation of the genera. 



l . Ovipositor protractile, aciculate or nearly so, the terminal clasp segment of the 



male usually uni or bideutate. 

 b 1 . Palpi quadriarticulate. 

 c 1 . Flagellate antennal segments with long whorled hairs and 2 strongly sinuous 

 and anastomosing circumfili, especially in the male. 

 d 1 . Ovipositor aciculate, without lamellae apically; larval breastbone bidentate. 



Schizomyia Kieffer. 

 <P. Ovipositor subaciculate, with 2 very small lamellae apically; larval breast- 

 bone unidentate Kiefferia Mik. 



c 2 . Flagellate antennal segments with short hairs, not whorled. 

 d l . Flagellate antennal segments sessile, without an appreciable stem. 

 e 1 . Claws much longer than the pulvilli, the basal segment of the ovipositor 



with rows of minute spinules Tetrasphondylia Kieffer. 



e 2 . Claws as long as the pulvilli, the first segment of the ovipositor finely 



striate, without spinules Farasphondylia Kieffer. 



(P. Flagellate antennal segments subsessile, with a stem about one-fourth the 

 length of the basal enlargement; claws shorter than the pulvilli. 



Xenasphondylia, new genus. 

 b 2 . Palpi bi or triarticulate, rarely uniarticulate. 

 c 1 . Circumfili in the female consisting of two comparatively simple bands. 

 d 1 . Terminal clasp segment of the male uni or bidendate, not pectinate. 

 e 1 . Subcostal cell normal, not opaque, the ovipositor with a lobed pouch 



proximally, not vesiculate basally Asphondylia H.Loew. 



(Syn. Monasphondylia Kieffer.) 

 e 2 . Subcostal cell opaque, the ovipositor with a globose, striate basal en- 

 largement Bruggmanniella Tavares. 



d 2 . Terminal clasp segment of the male pectinate. 

 e 1 . Terminal clasp segment apical; ovipositor subaciculate, with submedian 



groups of hairs on the distal segment Proasphondylia, new genus. 



e 2 . Terminal clasp segment of the male subapical, the ovipositor probably as 



in Schizomyia Bruggmannia Tavares. 



c 2 . Circumfili in the female forming 5 irregular, anastomosing bands; ovipositor 



as in Asphondylia Oxasphondylia, new genus. 



6 3 . Palpi uniarticulate. 



C 1 . Terminal clasp segment of the male subapical, conical Eouardiella Kieffer. 



c 2 . Terminal clasp segment of the male bidentate, the subcostal cell remarkably 

 broad, a rudimentary vein spur at the base of subcosta. 



Zalepidota Rubsaamen. 

 \ Ovipositor exserted, apically with lobes or triangular plates; terminal clasp seg- 

 ment of the male usually serrate apically. 

 b 1 . Palpi quadriarticulate. 

 c 1 . Terminal clasrj segment of the male subapical; third and fourth antennal 

 segments not fused, the circumfili coarsely reticulate in the male, the 



pulvilli longer than the claws Polystepha Kieffer. 



c 2 . Terminal clasp segment of the male apical; third and fourth antennal seg- 

 ments fused, the circumfili usually with many fine reticulations in the 



male, the pulvilli usually shorter than the claws Cincticornia Felt. 



b 2 . Palpi triarticulate. 

 c 1 . Terminal clasp segment of the male serrate apically. 



