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. 54b) 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 circumfila at the basal third and apically; terminal 
segment with a length about twice its diameter, irregularly 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. a2035. 
oNopIPLosis Felt 
1916 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 typeisO. sarcobati Felt. 
Onodiplosis sarcobati Felt 
1916 Felt, E. P. N. Y. Ent. Soc. Jour., 24:176 (female) 
1918 ————— Econ. Ent. Jour., 11:384 (male) 
19rd) | —— IN. Ye State Mus: Bulli200})p.) 126 
This remarkable female was reared from a bud gall onSarco- 
batus vermiculatus collected on the shore of Utah lake. 
