80 NEW YORK STATE MUSEUM 
bb Palpi triarticulate 
c Circumfili with short bows or loops, their length being one- Saas the 
diameter of the enlargement or less 
d- Thorax plainly extending over and concealing the head, at 
least to a considerable extent . 
e Males with 15 to 27 or possibly more antennal segments, 
females with 14 or more antennal segments, the flagel- 
late segments of the female usually strongly constricted; 
OVIPOSiton Short, Species) MOsbly. LaTsel ere 
Hormomyia H. Lw. 
ee Male and female with 14 or 15-(15th rudimentary) antennal 
segments, the flagellate segments of the female cylindri- 
cal and mostly with three circumfili, the ovipositor 
moderately long, species medium to small............ 
Trishormomyia Kieff. 
dd Thorax not produced over the head to a marked degree 
e Flagellate antennal segments of the male binodose or 
cylindrical 
f Third vein uniting with the margin near the apex, 
wings rather short, broad, the male antennae about 
as long as the body, the ovipositor short...:...... 
Caryomyia Felt 
cc Circumfilar loops with a length equal to the diameter of the enlarge- 
ment or longer 
d Basal clasp segment lobed, ventral plate chitinized and den- 
ticulateseenitalia moderate Sizes seme eee eerie eee 
Odontodiplosis Felt 
dd Basal clasp segment not distinctly lobed 
e Third vein uniting with the margin beyond the apex of 
the wing, dorsal plate deeply and narrowly incised, 
ventral plate broad and rounded....Adiplosis Felt 
bbb Palpi uniarticulate ; 
c Wings hyaline 
d Fourteen antennal segments in both sexes, the third and fourth 
not fused, the basal and distal enlargements globose and 
pyriform, respectively; dorsal and ventral plates deeply 
emarginate, the ovipositor short, chitinous, falcate......... 
Monarthropalpus Rubs. 
dd Fourteen antennal segments in the female, the fifth with a 
stem one-third the length of the basal enlargement, which 
latter has a length two and one-half times its diameter; third 
and fourth free; ovipositor stout, with a length one-half that 
of the abdomen, the distal part thickly clothed with long, 
silky hairs; male unknown.......... Onodiplosis Felt 
ddd Thirteen antennal segments in the female, the third and fourth 
fused, the basal and distal nodes globose and ovoid, respec- 
tively; dorsal and ventral plates bilobed; ovipositor stout, 
chitinous, needlelike............ Cystodiplosis Kieff. 
cc Wings black and yellow marked 
