168 
pleural, medioposterior sternopleural, and 
upper mesepimeral (over the upper two 
thirds and covering base of dorsal hair tuft, 
the whole patch being somewhat V-shaped 
and sometimes with a small interruption 
medially). Legs: Fore and mid- tarsi with basal 
white bands on I-II, sometimes also some 
basal pale -scales on III of the mid-tarsus. 
Hind tarsus with basal white bands on I-IV, 
V all white; the bands on I-II covering about 
one third of the segment, on III two fifths, 
and on IV about three fourths. Wing: Dark- 
scaled. A small basal spot of white scales on 
the costa. Abdomen: Tergite I pale-scaled ex- 
cept for a subdorsal basal dark patch, III-VI 
with basal median white bands, apical pale 
scaling present on II-IV; I with a complete 
band of pale scales on the lateral margin, 
II-VII each with a basal or slightly subbasal 
white spot just before the lateral margin. 
Terminalia: Basistyle with a large heavily 
setose lobe on inner surface. Dististyle ap- 
pendage apical. Claspette absent. Paraproct 
very distinctive in possessing a prominent 
mesal-ventrally projecting arm. Ninth tergite 
deeply cleft medially, the lobes each bearing 
a small tuft of short setae. 
Female. Length of wing about 3 mm. Palpus 
approximately one sixth the length of the 
proboscis, apical half white-scaled. Clypeus 
dorsally with 2 spots of white scaling. Vertex 
frequently paler than in male, the subdorsal 
dark band being largely obliterated by pale 
scaling. Dark scutal scaling paler than in male, 
being yellowish brown. Tarsal claws equal, 
fore and mid each unidentate, hind simple. 
Tergite II with a few dorsal pale scales basally 
or sometimes even with a well- developed 
basal band; apical pale scales on all the ter- 
gites. 
LARVA: Head: Antenna smooth, evenly 
shaped throughout; antennal hair single, 
small, inserted medially. Mouth brush with 
comb-like tips. Hair 4 with 4-7 branches; 5, 
6, 7 (rarely double), 8, 9, 13, and 14 single; 
12 with 2-3; 15 with 1-4; 17, 18, and 20 with 
1-2. Mentum with 11-14 lateral teeth. 
PACIFIC SCIENCE, Vol. VI, April, 1952 
Fig. 5. A. {Stegomyia) aegypti. Larva (Mindoro). ■ 
a. Head; b, terminal segments. 
Thorax: Prothoracic hair 1 with 2-3 branches; 
2 single; 3 double. Mesothoracic hair 9 with 
2- 3 branches; 10 and 12 single, long stout; 
11 very small; a stout elongate curved spine 
at base of tubercle. Metathoracic pleural hair 
group similar to above except that hair 12 is 
reduced. Abdomen: Dorsolateral hair on I with 
3- 4 branches; on II with 2-3. Lateral hair on 
I single; on II to V double; on VI single or 
double. Pentad hair 1 with 3-4 branches; 2 
and 4 single; 3 with 5-6; 5 with 2-5. Comb 
with 6-10 teeth, each tooth with prominent 
denticles at base of main shaft. Siphon 
smooth, without acus, index 2.5; 10-15 pec- 
ten teeth evenly spaced in a straight line, with 
ventral and occasionally dorsal denticles; 
