80 NEW YORK STATE MUSEUM 



bb Palpi triarticulate 



c Circumfili with short bows or loops, their length being one -half 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 ; 



ovipositor short, species mostly large 



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 

 / 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 



C a r y o m y i a 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- 

 ticulate, genitalia moderate in size 



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 



M o n a r t h r o p a 1 p u s 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 



