184 
PACIFIC SCIENCE, Vol. V, April, 1951 
Fig. 31. Rioxa {Dirioxd) confusa n. sp.: a, wing; b, ovipositor, full length; c, apex of ovipositor; d, a spermatheca 
of female. 
and is nearly as long as the combined lengths 
of segments 3 to 5. The extended ovipositor 
(Fig. 31^) is about 2.27 mm. long. The piercer 
measures about 0.7 mm. in length and is very 
blunt at the apex and somewhat swollen in 
the middle. At its widest point the breadth is 
about 0.15 mm. The piercer is slightly con- 
stricted a short distance behind the apex, at 
about the end of the oviduct (Fig. 31c). The 
I 
at the apex; the distad pair are long and 
strong, extending well beyond the tip of the 
piercer. The basal pair are short and scarcely ' 
one-fourth as long as the distad pair. The 
apex of the oviduct is about 0.09 mm. from 
the tip of the piercer. A pair of sublateral 
piercer has four pairs of setae located almost 
