226 
PACIFIC SCIENCE, Vol. V, July, 1951 
from the Philippines; a. aurantius (Theobald) 
from Malaya, Borneo, Sumatra, and New 
Guinea; a. chrysogaster (Taylor) from Queens- 
land; and a. painei Knight (formerly a. 
nigrescens) from the Solomons. 
This subspecies is primarily distinct from 
the other members of the aurantius complex 
on the color of the scutal scaling. 
Subgenus Ochlerotatus Lynch Arribalzaga 
1891- Ochlerotatus Lynch Arribalzaga, Rev. 
Mus. La Plata 2: 143. Genotype: confirma- 
tus L. A. (syn. of scapularis Rondani) (South 
America) . 
ADULT: Distinguished from all the other 
subgenera in the Philippines by a combina- 
tion of the following: Male palpi as long as 
the proboscis, mesosome simple, claspettes 
present and with filament setiform, and basi- 
style with a distinct basal lobe. Other char- 
acters are: Male palpi approximately equal to 
the proboscis in length; segment III with 
apex upturned, IV and V declined; the apex 
of III and all of IV and V with a dense band 
of long, laterally and ventrally directed hairs. 
Vertex dorsum and scutellum narrow- scaled. 
Acrostichal and dorso-central bristles present. 
Paratergite usually with sparse scaling. Lower 
mesepimeral bristles absent. Fore and mid 
tarsal claws of male unequal, larger claw bi- 
dentate (mid of vigilax ludlowi has median 
tooth reduced to a swollen area), smaller uni- 
dentate; of female equal and unidentate; hind 
claws simple in both sexes. Terminalia: 
Basistyle with a distinct basal lobe. Disti- 
style appendage apical. Mesosome simple. 
Claspettes present, with distinct spine- or 
bristle-like filament. 
LARVA: Separable from all the other sub- 
genera in the Philippines, except Aedimor- 
phus and some specimens of the Finlaya 
species leucopleurus and aureostriatus ^ by the 
possession of an acus on the anal plate. 
Antennal hair tuft with 1-4 branches. Head 
hair 4 with 4-5 branches, 5 and 6 single. 
Comb with 23-28 scales in a patch. Siphon 
with an attached acus; 5-12 pecten teeth. 
evenly arranged. Anal plate incomplete. Ven- 
tral brush with 15-17 tufts, all but the basal 
two arising from a laterally connected barred 
area. Habitat — temporary, brackish ground 
pools. 
DISTRIBUTION: This is a very large sub- 
genus with many species in all the regions of 
the world except the Ethiopian and Oriental, 
where it is represented by only a few species. 
The single form found in the Philippines is a 
subspecies of a species common throughout 
the Australasian Region. 
SYSTEMATICS: Edwards (1932: 136) divided 
the subgenus into eight groups, with the 
single Philippine species falling into Group 
A {taeniorhynchus-gtonp : Culicelsa) . This group 
is distinguished by the absence of a definite 
apical lobe on the basistyle, and in having the 
claspette filament bristle-like. 
Aedes (Ochlerotatus) vigilax ludlowi 
(Blanchard) 
Figs. 2, 3 
1903. Culex annuli f era Ludlow (nec E. Blan- 
chard, 1852), Jour. N. Y. Ent. Soc. 11: 141 
(females). Type locality: Philippines. Man- 
garin, Mindoro (Suggs). Type: Female 
lectotype here designated from a series of 
nine female cotypes in the U. S. N. M.f 
One female cotype also exists in the British 
Museum. 
1904. Culex annuliferus Ludlow. Ludlow, Can. 
Ent. 36: 72. Emendation. 
1905. C. Ludlowi R. Blanchard, Les Moust., 
p. 630. Nom. nov. 
1917. Ochlerotatus annuliferus (Ludlow). Ed- 
wards, Bui. Ent. Res. 7: 215. Different 
combination. 
1922. Aides {Ochlerotatus) vigilax (Skuse). In 
part. Edwards, Bui. Ent. Res. 13: 99* 
Synonym! zed ludlowi. 
1925. Culex ludlowi Theobald. Dyar and 
Shannon, Ins. Insc. Mens. 13: 76. Error in 
author association. 
1929. annuUpes Ludl. Edwards, Notulae Ent. 
9: 2. In error for annulifera when quoted as 
a synonym of vigilax. 
