238 NEW YORK STATE MUSEUM 



pulvilli rudimentary. Genitalia; basal clasp segment stout; term- 

 inal clasp segment short, stout; dorsal plate broad, broadly and 

 triangularly emarginate, the lobes broadly rounded; ventral plate 

 long, broadly and roundly emarginate, the lobes tapering. 



Female. Length 2.5 mm. Antennae extending to the fourth 

 abdominal segment, sparsely haired, reddish; fourteen segments, the 

 fifth (fig. 546) with a stem about one-half the length of the cylindric 

 basal enlargement, which latter has a length three times its diameter 



Fig. 56 Monarthropalpus buxi, side view of apex 

 of the abdomen and ovipositor (enlarged, original) 



and rather high circimifila at the basal third and apically; terminal 

 segment with a length about twice its diameter, iiTegularly obtuse. 

 Body a nearly uniform reddish orange, the abdomen sparsely haired. 

 Ovipositor (fig. 56) short, broadly rounded and with a curved 

 chitinous spine having a length about one-half the diameter of the 

 abdomen. Other characters about as in the male. Cecid. a203S. 



ONODIPLOSIS Felt 



191 6 Felt, E. P. N. Y. Ent. Soc. Jour., 24: 175 



This genus with its greatly reduced palpi, the somewhat produced 

 mesonotum and the modified ovipositor is allied to the series referable 

 to Hormomyia and its near associates and particularly to Monar- 

 thropalpus Rubs. The type isO. sarcobati Felt. 



Onodiplosis sarcobati Felt 



1916 Felt, E. P. N. Y. Ent. Soc. Jour., 24:176 (female) 



1918 Econ. Ent. Jour., 11:384 (male) 



1918 N. Y. State Mus. Bui. 200, p. 126 



This remarkable female was reared from a bud gall onSarco- 

 batus vermiculatus collected on the shore of Utah lake. 



