The Aedes Mosquitoes of the Philippine Islands 
II. Subgenera Skusea, Christophersiomyia^ Geoskusea, Khinoskusea, 
and Stegomyia (Diptera, Culicidae)^ 
Kenneth L. Knight and William B. Hull^ 
INTRODUCTION 
This is the second of a series of three papers 
dealing with the Aedes fauna of the Philippine 
Islands. Part I (Knight and Hull, 1951^) con- 
tained the general introduction, the keys to 
the adults and larvae, and the treatments of 
the species belonging to the subgenera 
Mucidus, Ochlerotatus, and Fmlaya. The part 
given here reports on the species of the sub- 
genera Skusea, Christopher siomyia, Geoskusea, 
Khinoskusea, and Stegomyia. 
All of the necessary introductory informa- 
tion is given in Part I and only the explana- 
tions necessary for an understanding of the 
abbreviations and symbols used are repeated 
here. 
A dagger (j) denotes types that have been 
examined by us. 
The following abbreviations are used in 
the descriptions. Adult: apn, anterior pro- 
notal lobe; ppn, posterior pronotal lobe. 
Larva: isc, inner or upper caudal hair of the 
anal segment; osc, outer or lower caudal hair 
of anal segment; Ih, lateral hair on anal plate. 
Figures are not drawn to scale. 
The following abbreviations are used in the 
species distribution sections to denote the 
present locations of specimens examined. 
A.N.S;P., Academy of Natural Sciences of 
^The opinions or conclusions contained herein are 
those of the authors and are not to be construed as 
official or reflecting the views of the Navy Department 
or of the naval service at large. Manuscript received 
October 23, 1951. 
^Naval Medical Research Institute, Bethesda, Mary- 
land. Lieutenant Commander and Lieutenant, re- 
spectively, MSC, USN. 
Philadelphia; C.A.S., California Academy of 
Sciences; U.S.N.M,, U. S. National Museum; 
B. M., British Museum (Natural History); 
C. C., Cornell University; R.K.L., specimens 
from the collection of Naval Medical Re- 
search Unit No. 2 on which nothing has been 
previously published and which are now de- 
posited in the U. S. National Museum, the 
Johns Hopkins University, the California 
Academy of Sciences, the British Museum, 
and the Knight collection. 
SYSTEMATICS 
Subgenus Skusea Theobald 
1903 . Skusea Theobald, Mon. Cul. 3: 291. 
Genotype: pemhaensis (Africa). 
ADULT: Distinguished from all the other 
subgenera in the Philippines by the combina- 
tion of being without special markings on the 
legs and scutum; having the male palpi as 
long as, or slightly longer than, the proboscis; 
and having the scales of the vertex and scutel- 
lum broad and flat. Other characters are: 
Dark species without special ornamentation. 
Male palpus straight, slender, a very few short 
hairs at the apices of the distal three segments. 
Dorsocentral and acrostichal bristles present. 
Paratergite not scaled. Lower mesepimeral 
bristles absent. Fore and mid-tarsal claws of 
male unequal, the smaller claw with a very 
small tooth; hind claws equal, simple. Tarsal 
claws of female equal, simple. Terminalia: 
Basistyle rather short and broad, with an 
apical lobe and with complicated basal lobes; 
dististyle appendage apical. Mesosome sim- 
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