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PACIFIC SCIENCE, Vol. V, April, 1951 
yellow with no discolorations or spots except 
for a slight brownish marking which some- 
times occurs in the central part. The vertical 
and frontal bristles are dark brown to black, 
the other head bristles and hairs are yellow. 
The third antennal segment is comparatively 
short and broad. It is approximately equal in 
length to the face and is slightly less than 
three times longer than wide. The facial spots 
are oval and their length is equal to about one- 
third the length of the face. Thorax: With 
three broad, yellow posts utural stripes. The 
yellow area on each mesopleuron broadens in 
the dorsal portion and covers almost all of 
the dorsal margin of that sclerite; the yellow 
markings of the mesopleura are separated 
from the humeri by a short space where the 
integument is rufous. Legs: Entirely pale 
colored, the femora whitish on their basal 
three-fourths and yellow at their apices. 
Wmgs: First two costal cells hyaline and de- 
void of microtrichia except in the apex of the 
second section. The costal band is very nar- 
row and does not extend below vein R3 
except at its apex. The band extends around 
the wing margin beyond the apex of vein 
R4-1-5. The cubital streak is pale yellow and is 
broad at its base but fades out just beyond the 
apex of the cubital cell. The streak occupies 
all of the basal part of cell M4 and extends 
about half way along the m-cu crossvein. 
There is a distinct indication of a supernumer- 
ary lobe at the apex of vein Cui-f 1st A but no 
well-developed lobe. The narrowed portion 
of the cubital cell is approximately equal to 
that section from the apex of the cell to the 
wing margin. Abdomen: First tergum brown- 
ish on the sides on basal half, second tergum 
with a brown subbasal band and a whitish 
apical band; abdomen otherwise rufous 
except for an elongate brown spot, or vitta, 
down the middle of the fifth tergum. 
Genitalia: The tenth segment is well de- 
veloped and conspicuous. It is hollowed out, 
spoon-shaped in end view and convex below, 
and has strong yellow hairs on the venter and 
around the margins. The apical lobes of the 
ninth segment are long and slender and have 
five to six small teeth on the underside of the 
apex (Fig. 3^) . A slight ridge or line extends 
across the apex from each of the teeth. A 
small secondary lobe is developed at the 
basal part of each of the long finger-like 
lobes; the integument of this lobe is micro- 
scopically reticulated. The inner basal lobes 
of the ninth segment have a pair of black, 
blunt processes at their apices. The aedeagus 
is distinctive. The apical sac-like portion has 
the inner walls covered with very stout spine- 
like processes (Fig. 3^). Those spines in the 
outer portion of the sac have serrated edges. 
The genital pore is dorsal and extends beyond 
the remainder of the aedeagus. 
Length: Body, 6.0 mm.; wings, 5.6 mm. 
FEMALE. The distance from the apex of the 
cubital cell to the wing margin is one and 
one-third times greater than the length of the 
narrowed portion of the cubital cell. Ovi- 
positor: In in situ mounts the exposed ovi- 
positor is almost as long as terga 4 and 5 
combined. When extended the ovipositor is 
long and slender; when viewed under high 
power it is very characteristic in development. 
The over-all length (Fig. 3c) is about 6.4 mm. 
The piercer is approximately 1.7 mm. long by 
0.2 mm. wide at its broadest point. The setae 
are strong and conspicuous and are situated 
almost at the apex of the piercer; the closest 
pair is about 0.02 mm. from the apex. The 
setae which are most distally placed extend 
well beyond the apex of the piercer. The apex 
of the piercer is blunt, undulated, and indis- 
tinctly trilobed (Fig. ^d). The apex of the 
oviduct is about 0.17 mm. from the tip of the 
piercer. The inversion membrane is approxi- 
mately 2. 2-2. 4 mm. long by 0.3 mm. at its 
widest point. The scales of the rasper end 
about 1.1 mm. from the base of the eighth 
segment. The basal segment of the ovipositor 
is about 1.5 mm. long by 1.3 mm. at its 
widest point. The spiracles are situated about 
0,17 mm. from the base of the segment 
measured on the lateral margins. 
