Aedes of the Philippines — Knight and Hull 
ADULT: A medium-sized brown species 
with pale markings on the proboscis, scutal 
scales brown (female) or brownish-golden 
(male), abdominal tergites possessing straight 
basal white bands, and all the hind tarsal seg- 
ments marked by basal white bands. 
Male. Length of wing 3. 0-3. 5 mm. Head: 
Proboscis dark, marked with a pale-scaled 
area beginning at basal one-third on the 
ventral and lateral aspects and extending to 
just beyond the middle, the medial portion 
of this band extending onto the dorsum and 
forming a complete band. Palpus approxi- 
mately equal to proboscis in length, with 
basal white rings on the last three segments. 
Torus bare. Vertex dorsally with pale narrow 
scales and pale and dark upright- forked scales 
(the pale uprights being medial and the dark 
ones lateral) ; laterally with a patch of broad 
creamy scales. Thorax: Scutum clothed with 
small narrow brownish-golden scales; the 
scales on the prescutellar area and on the 
scutellum narrow and pale yellow. Apn with 
narrow-curved pale yellowish scales, some- 
times a few broadened scales also apparent; 
ppn rather thinly covered with mixed narrow 
and broad dark scales (the broad scales being 
mostly ventral), in addition there are a few 
narrow yellow scales present dorsally and a 
few broad pale scales ventro-posteriorly. Fol- 
lowing pleural areas each with a small patch 
of broad cream-colored scales: propleural, 
paratergite (very few and frequently none), 
postspiracular, prealar (below the knob), 
upper sternopleural, medio-posterior sterno- 
pleural, and upper mesepimeral (this patch 
begins on the anterior border adjacent to the 
upper sternopleural patch; in addition there 
is a more or less detached group of mixed 
broad and narrow pale scales associated with 
the hair tuft). No lower mesepimeral bristles. 
Legs: Femora dark-scaled, anteriorly marked 
with scattered pale scaling, posteriorly par- 
tially pale-scaled (the hind femur extensively 
so). Tibiae dark, fore and mid with posterior 
pale scaling. Fore and mid tarsi with narrow 
basal white bands on I-III; hind tarsus with 
227 
Fig. 2. a. {Ochlerotatus) vigilax ludlowi. Male termin- 
alia (Lu 2 on). 
basal white bands on all segments, broad on 
II-V. Fore tarsal claws unequal, the larger 
claw bidentate, the smaller unidentate; mid 
tarsal claws unequal, the larger claw with a 
basal tooth and a swollen area medially, the 
smaller unidentate; hind tarsal claws equal, 
simple. Wing: Dark-scaled. Abdomen: Tergite 
I with a lateral patch of creamy scales, II-VII 
with straight basal creamy- white bands. 
Sternites pale-scaled with apical dark-scaled 
bands. Terminalia: Basistyle with a prom- 
inent, densely setose basal lobe; two rather 
stout bristles subapically on the inner tergal 
margin. Dististyle appendage apical. Clasp- 
ette filament spine-like. Ninth tergite lobes 
each bearing 3-4 bristles. 
Female. Length of wing approximately 3.2- 
3.5 mm. Proboscis dark with creamy scaling 
laterally and ventrally from level of palpal 
apex to just beyond middle, the pale-scaled 
area sharply delimited apically; pale scaling 
may extend onto dorsal surface. Palpus ap- 
proximately one-sixth the length of the pro- 
boscis; dark with apex narrowly white-scaled. 
Torus bare or with a few dark hairs. Vertex 
with upright-forked scales all dark; the 
lateral patch of broad creamy scales with a 
