March, igii.] FeLT : GENERIC SYNOPSIS OF ItONID.E. 61 



Genus CONTARINIA Rond. i860, type Tipula loli DeG. 



Separated from the preceding by the absence of scales on the 

 wings and the lack of a dorsal tooth on the first antennal segment. 

 Costa is interrupted at its union with the third vein. The lobes of 

 the dorsal plate taper strongly and are subacute. The ovipositor is 

 long and filiform. Synonyms: Eudiplosis Kieff. 1894; Sficfodiplosis 

 Kieff. 1894. Europe, Africa, North America. 



Genus SYNDIPLOSIS Riibs. 1910, type 5". ivinncrtzi Rubs. 



Separated from Contarinia by the third antennal segment not 

 being abnormally prolonged and the flagellate segments being succes- 

 sively shorter distally. The pulvilli are as long or longer than the 

 claws. Europe. 



Genus THECODIPLOSIS Kieff. 1895, type Cecidomyia brachyntera Schw. 

 Separated from Contarinia by costa not being interrupted at its 

 union with the third vein; the lobes of the ventral plate hardly taper 

 and are rounded apically. The ovipositor is rather stout. Europe, 

 North America. 



Genus STEPHODIPLOSIS Tav. 1908, type 5". liimtecc Tav. 

 Distinguished at once from all other bifili by the 12 antennal seg- 

 ments; palpi quadriarticulate, the third vein uniting with costa well 

 beyond the apex ; dorsal and ventral plates bilobed. Ovipositor fili- 

 form, very long. Africa. 



Genus DENTIFIBULA Felt 1908, type Contarinia viburni Felt. 

 Easily distinguished from the preceding genera by the triarticulate 

 palpi and the basal clasp segment with its conspicuous triangular 

 process apically, the terminal clasp segment being therefore subapical ; 

 claws simple, strongly curved, about as long as the pulvilli. North 

 America. 



Genus ZEUXIDIPLOSIS Kieff. 1904, type Z. giardiana Kieff. 

 Palpi triarticulate, basal clasp segment with no distinct process 

 apically ; pulvilli longer than the stout, evenly curved claws, the 

 third and fourth antennal segments nearly free, the basal and distal 

 stems of the fifth segment with a length twice and thrice their diam- 

 eters, respectively ; ovipositor short. Europe. 



Genus STENODIPLOSIS Reut. 1895, type 5". gcniadati Reut. 

 Distinguished from the preceding genus by the pulvilli being 



