162 
PACIFIC SCIENCE, VoL VI, April, 1952 
Subgenus Christophersiomyia Barraud 
1923. Christophersiomyia Barraud, Indian Jour. 
Med. Res. 10: 786. Genotype: thomsoni 
Theobald (India). 
ADULT: Ornate species. Distinct from the 
other Philippine subgenera by the combina- 
tion of the following characters: short palpi 
in both sexes (slightly over a quarter as long 
as proboscis), white-marked proboscis, nar- 
row scales on apn, banded hind tarsi, and 
undivided mesosome. Other characters: 
Scales of vertex and scutellum all broad. 
Scutum with white markings. No dorso- 
central, acrostichal, or prescutellar bristles. 
Paratergite scaled. Lower mesepimeral bristles 
present. Tarsal claws in both sexes small, all 
equal, and each unidentate. Terminalia: 
Basistyle with a slight basal lobe, no apical 
lobe. Dististyle appendage apical. Mesosome 
simple, not divided into toothed lateral lobes. 
No claspettes. 
LARVA: Unknown for the single Philippine 
species. Described by Edwards (1932: 159) 
as follows: ' 'Antenna spicular, with branched 
hair on shaft. Siphon index about 3; tuft near 
the middle; pecten evenly arranged; acus 
small or absent. Comb teeth in a single close- 
set row. Anal plate narrowly incomplete. 
Ventral brush short.” Barraud (1934: 213) 
shows, for thomsoni (Theobald), head hairs 
4, 6, and 7 roughly on a horizontal level, with 
hair 5 nearly directly posterior to 6. Habitat — 
tree and rock holes. 
DISTRIBUTION: Confined to the Oriental 
Region. Three species are known form India 
and Ceylon, and one from the Philippines. 
SYSTEMATICS: The four known species are 
so closely related as to suggest that they form 
either a polytypic species or a superspecies. 
Even so, a subgeneric position is desirable for 
them because of their markedly isolated po- 
sition within the genus Aedes. 
Aedes (Christophersiomyia) brayi 
Knight 
1947. Aedes {Christophersiomyia) hrayi Knight, 
Biol. Soc. Wash., Proc. 60: 73 (male, fe- 
male). Type locality: Philippines. San Jose, 
Nueva Ecija Prov., Luzon (Bray). Type: 
Male (holotype) in U.S.N.M.f Terminalia 
mounted. 
DISTRIBUTION: Specimens examined. Known 
only from the type series of one male and one 
female. Luzon: San Jose, Nueva Ecija Prov. 
DISCUSSION: A. hrayi differs from the other 
known species of Christophersiomyia on the 
markings of the proboscis, femora, tibiae, 
and tarsi. 
The larva is unknown. 
Subgenus Geoskusea Edwards 
1929. Geoskusea Edwards, Bui. Ent. Res. 20: 
342. Genotype: fimhripes Edwards (New 
Britain) . 
ADULT: Male palpi either about one fourth 
as long as the proboscis, or else approximately 
two thirds as long. Scales on vertex, and 
usually those on the scutellum also, broad 
and flat. Dorsocentral and acrostichal bristles 
present. Paratergite not scaled. Lower mesepi- 
meral bristles absent; however, numerous fine 
hairs present on one or more of the pleural 
sclerites. Fore and mid- tarsal claws of male 
unequal, the larger claw of fore legs bidentate 
and the smaller claw unidentate, both mid- 
tarsal claws unidentate; hind tarsal claws 
equal, simple. Female tarsal claws equal, 
simple. Terminalia: Basistyle long and slender, 
with a more or less detached subbasal or 
median setose lobe. Dististyle appendage 
apical. Mesosome simple, scoop-like as in 
Ochlerotatus. Claspettes absent. 
LARVA: Unknown for the single Philippine 
species. The larvae of daggyi Stone and Bohart 
from the New Hebrides and kabaenensis Brug 
from the Celebes have been described and 
have the following characters: Antennal hair 
2-4 branched, inserted near the middle. Head 
hair 6 placed slightly posterior to level of 7, 
5 quite near to 6 and obliquely mesad and 
posterior to it, 4 near the midline and on or 
near to a level with 6. Comb scales numerous, 
