220 Annals Entomological Society of America [Vol. V, 
Iphiaulax abunensis sp. nov. 
Female. Length 11.5 mm.; ovipositor 14mm. Fulvous; the head, 
except for the pale palpi and the red tip of scape and underside of pedicel; 
prothorax, except posterior angles; abdomen above, beyond the base of 
the fifth segment; ovipositor and its sheaths, all coxee, middle of fore 
femora, middle femora, except base and apex, hind femora apical half 
of tibiz, their tarsi, and apical joint of four anterior tarsi black. Fore 
wings pale yellowish with an uneven blackish median band and infus- 
cated tips from the base of the third cubital cell; stigma black, hind 
wings slightly infuscated. Head transverse, not quite half broader 
than thick; antennz slightly shorter than the body, the scape twice as 
long as thick; first two flagellar joints subequal, each twice as long as 
thick. Face sparsely and irregularly punctate on the sides, with a 
median flat, polished area showing traces of fine aciculations; clypeus 
finely irregularly punctate; antennal tubercles short. Eyes oval, 
three times as long as the malar space. Mesonotum with the parap- 
sidal furrows indicated only in front. Scutellum with a crenulate line 
across its base. Metanotum smooth above, punctulate on the sides, 
with a deeply impressed groove just outside the elongate oval spiracles. 
First segment of abdomen, exclusive of its membranous sides, twice as 
long as wide, the lateral margins parallel; the median elevation ovate, 
pointed in front, constricted and truncate behind; on each side of this 
is a deep, narrow, groove before the carinate margin. Second segment 
nearly as long as wide behind, the median field long and narrow, reach- 
ing beyond the apical third of the segment; on each side of this is a 
broad longitudinal depression, then a carina, then a second similar, 
but narrower depression that extends to the posterior corner. Second 
suture rather wide, obsoletely crenulate, slightly extended forward at 
the middle where the apical margin of the second segment is raised. 
Third segment the widest; twice as broad as long and faintly concave 
on its posterior margin; the anterior angles not produced forward, but 
separated as large spaces by a groove that curves across the segment 
from near the median line to the center of the lateral margin; with an 
indistinct, narrowly triangular median elevation. Fourth segment 
with an arcuate groove, interrupted at the median line, across the middle 
of its base. Legs rather long, not stout, wings with the cubitus strongly 
bent near the base; recurrent nervure received at the tip of the first 
cubital cell; first section of the radius one-third as long as the second 
and two-thirds as long as the slightly oblique second transverse cubitus; 
submedian cell slightly, but distinctly, longer than the median; discoidal 
vein broken near its lower third. 
One female from Abunda, Rio Madeira, Brazil (Mann and 
Baker). 
This is related to J. excisus Szépligeti, but differs by its 
shorter ovipositor and different abdominal sculpture, the 
second segment haying two pairs of longitudinal grooves, and 
the,fourth having an arcuate line, without lateral curved lines. 
