386 NEW YORK STATE MUSEUM 
gg Terminal clasp segment slender, distinctly longer than the 
basalgclasp:sesmentien: arene ee Youngomyia 2. 
(fType Dichrodiplosis podophyllae Felt), 
ggg Terminal clasp segment normal, not as above............... : 
Mycodiplosis Rubs. 
cc Claws simple 
d Distal flagellate antennal segments cylindric, stemmed, not binodose | 
Prodiplosis n. g. | 
(Type Cecidomyia floricola Felt) | 
dd All flagellate segments binodose at least 
-e Third vein uniting with costa well before the apex 
Arthrocnodax Rubs 
ee Third vein uniting with costa at or beyond the apex of the wing 
f Palpi triarticulate 
g Ventral plate or harpes conical, serrate..Odontodiplosis n. g. 
(Type Cecidomyia karnerensis Felt) 
gg Ventral plate not serrate; basal clasp segment stout......... 
Adiplosis n. g. 
(Type Cecidomyia toxicodendri Felt) 
ff Palpi quadriarticulate 
g Claws bent at right angles or nearly so 
h Ventral plate deeply and roundly emarginate, the dorsal 
plate dilated, the lateral angles being strongly produced.. 
Hyperdiplosis n. g. 
(Type Ceci domeda lobata Felt) 
hh Weuieea plate very long, slender, roundly emarginate, the 
dorsal plate not rently dilate die aee Giardomyia n. g. 
: (Type Cecidomyia photophila Felt) 
gg Claws not bent at right angles 
h Basal clasp segment conspicuously teped or spined 
71 Basal clasp segment with one or more heavy, chitinous 
Splines apically mere nes ere Metadiplosis n. g. 
(ype a Mi siph mols as neespm) 
ii Basal clasp segment with a long, setose process apically 
Epidiplosis n. g. 
(iype Es isa yi spam 
iii Basal clasp segment with a triangular lobe basally; ven- 
tral plate scarcely longer than broad..Lestodiplosis Kieff. 
hh Basal clasp segment without conspicuous lobes or spines 
it Dorsal and ventral plates short, broad, triangularly 
emarginate; terminal clasp segment short, stout, the 
Ai ped oil SPHORIGH, KGIMIKS Ga dboouobadued 66 Paradiplosis n. g. 
(Type Cecidomyia obesa Felt) 
ee ee ee eo ee Be oe 8 
11 Not as above 
7 Dorsal plate divided, the lobes greatly produced and 
broadly rounded laterally......... Obolodiplosis n. g. 
. (Type Cecidomyia orbiculata Felt) 
jj Not as above 
k Ventral plate long, linear, narrowly rounded apically 
: Clinodiplosis Kieff. 
kk Ventral plate not as above..:.....Cecidomyia’ Meig. 
