166 
PACIFIC SCIENCE, Vol. VI, April, 1952 
length from equaling the proboscis to being 
only one half as long; bare of hairs except for 
a few bristles at the apices of III-V; straight 
or with IV-V upturned. Scales on vertex and 
scutellum all broad and flat. However, in 
some species the vertex possesses a diamond- 
shaped medioanterior area of narrow white 
scales which extends anteriorly between the 
eyes. Acrostichal bristles absent, a few dorso- 
centrals present in some species. Paratergite 
with or without scaling. Lower mesepimeral 
bristles absent. Male tarsal claws unequal on 
fore and midlegs, unidentate (the smaller 
simple in albopictus)\ equal, simple on hind 
legs. Female tarsal claws equal; fore and mid 
simple or unidentate, hind simple. Terminalia: 
Basistyle without apical lobe (except in m. 
var. perplexus) ; basal lobe either a plaque on 
medial surface or a largely detached columnar 
structure, setose. Claspettes absent. Meso- 
some divided into two lateral plates, each of 
which bears numerous teeth laterally. 
LARVA: Antennal hair with 1-5 branches. 
Head hair 5 posteriorly on or near to a longi- 
tudinal level with 6 and slightly posterior to 
the level of the antennal bases, 4 just anterior 
and mesad of 6, 7 slightly posterior to level 
of antennal bases. Comb teeth stout, thorn 
like, in a row. Siphon with acus present or 
absent; pecten teeth evenly spaced. Ventral 
brush with 8-12 single or double hairs (up 
to 6-branched in a few species, however), 
barred area may or may not be laterally con- 
nected (in desmotes the lateral bar is modified 
into a small plate) . Habitat — a wide variety of 
natural and artificial container habitats (tree 
holes, bamboo stumps, leaf axils, etc.). One 
species is commonly found in rock pools. 
DISTRIBUTION: Edwards (1932: 161) gives 
the distribution of this subgenus as follows: 
"Except that A. aegypti has been artificially 
spread by commerce, the subgenus Stegomyia 
is confined to the tropical and subtropical 
regions of the old world, chiefly the Ethiopian 
and Oriental Regions." At present 15 species 
and subspecies are known from the Philip- 
pines. 
SYSTEMATICS: Edwards (1932: 161) divided 
the subgenus into four groups, of which all 
except Group D are represented in the Philip- 
pines. Knight and Hurlbut (1949: 26) raised 
the albolineatus complex to the status of a full 
additional group (Group E) and divided 
Group C into three subgroups. 
Group A {aegypti- Stegomyia s. str.). 
Scutum with a pair of crescent-shaped, oval, 
or rounded patches of white scales in front of 
the anterior fossae, and with more or less dis- 
tinct traces of one or two median pale lines. 
Dististyle with a terminal appendage. Para- 
procts each with a prominent mesal ventral 
arm basally. Represented in the Philippines 
by aegypti. 
Group B {w-alba-gtOM'p) . Scutal ornamen- 
tation various; usually patches of white or 
yellow scales are present, and these are seldom 
arranged as in Group A, and there is never a 
distinct narrow median white stripe. Disti- 
style appendage present or absent, if present 
it is terminal. Paraprocts without vertical arm 
near base, except in desmotes. Represented in 
the Philippines by aurotaeniatus, desmotes^ 
gardnerii, and meronephada. 
Group C {scutellaris-gtou^) . Scutum with a 
conspicuous white median line (this some- 
times broadened anteriorly), but without 
large white patches. Dististyle appendage 
terminal. Paraprocts without vertical arm near 
base. Knight and Hurlbut (1949: 26) divided 
Group C into three subgroups as follows: Sub- 
group I, scutellaris s. str. Abdominal 'tergal 
markings with the more mesal portions sub- 
basal. Postspiracular scales lacking. Scutal 
longitudinal median line relatively slender. 
Pleural scale patches arranged into two rather 
well-defined longitudinal bands (not true of 
gurneyi Stone and Bohart) . Represented in the 
Philippines by paullusi and scutellaris. Sub- 
group II, albopictus. Abdominal tergal mark- 
ings basal. Postspiracular scales lacking. 
Scutal longitudinal median line relatively 
slender. Pleural scale patches not arranged in 
two well-defined longitudinal bands. Repre- 
sented in the Philippines by albopictus. Sub- 
