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PACIFIC SCIENCE, Vol. XII, July, 1958 
Fig. 22. Plecia parva Malloch. a , Genitalia, end view; 
b, ninth sternum; c , ninth tergum. 
genitalia. The ninth segment is fused into a 
ring which forms a capsule surrounding the 
genitalia (Fig. 22a). 
Malloch placed this in the fulvicollis com- 
plex but the specimens I have seen have the 
pleura brown to black , the front half of the 
mesonotum is discolored with brown to black 
with the hind portion rufous, also the scute!- 
lum is rufous. In the female the front of the 
mesonotum is not so extensively darkened. 
The antennae are broken on the specimens at 
hand, Malloch said the antennae are 8-seg- 
mented, exclusive of the minute tip. Legs 
stouter than usual, femora moderately swollen, 
tibiae almost parallel sided. Wings pale brown. 
Vein R 2+ s slightly curved, forming a 65° angle 
with R4+5. Petiole of cell Mi not quite one- 
half longer than r-m cross vein. Cell Cu not 
narrowed. The ninth tergum and sternum are 
fused on the sides and form a capsule around 
the internal genital structures. The claspers 
and the shape of the hind margin of the 
sternum cannot be seen clearly except in end 
view (Fig. 22a). From a ventral view only, the 
bases of the claspers are visible (Fig. 22b). The 
tergum is moderately cleft on the hind margin 
(Fig. 22c). 
Length: Body, 4.0-4. 5 mm.; wings, 5.0- 
5.5 mm. 
TYPE LOCALITY: Los Banos, Philippine 
Islands. 
Type in the U. S. National Museum. 
I have studied specimens from Luzon, P. I. 
Plecia ruficornls Edwards 
Fig. 23 
Plecia ruficomis Edwards, 1927, Treubia9: 363. 
This species is known only from the type 
male and its exact position is not clearly un- 
derstood. Edwards’ description was very brief 
and his drawing of the genitalia is not entirely 
clear. It is indicated that the lobes on the pos- 
terior lateral margins of the sternum are slen- 
der, sharply pointed and widely spaced, that a 
broad rounded median lobe and a pair of small 
submedian lobes are also present on the hind 
margin of the sternum (Fig. 23). The ninth 
tergum has a deep U-shaped cleft on the hind 
margin, the lobes are subacute at apices. 
This fits in the fulvicollis complex by having 
the thorax entirely rufous. It apparently is 
