Aedes of the Philippines — Knight and Hull 
219 
pale scaling; paratergite of female 
scaled 50 
50. Subspiracular area scaled; female toms 
with white scaling. 
{Aedimorphus) vexans nocturnus 
Subspiracular area without scales; fe- 
male torus not scaled 
(Ochlerotatus) vlgilax ludlowi 
51. Hind femora anteriorly dark, marked 
with a complete broad white band 
just before the middle and with a 
wide ventro-apical white area; later- 
al scutellar lobes narrow-scaled . . . 
{Finlayd) harperi 
Hind femora not marked as above; 
scutellum all broad-scaled 52 
52. Vertex dorsum narrow- scaled, at least 
along the mid line; scutum brown- 
scaled, marked with a rather in- 
definite pattern of small clusters of 
yellowish scales; some of the hind 
tarsal segments with narrow apical 
yellowish bands 
{Aedimorphus) mindoroensis 
Vertex dorsum mid line at least par- 
tially broad-scaled; scutum not 
scaled as above; hind tarsal seg- 
ments not marked with apical yel- 
lowish bands 53 
53. Vertex dorsum broad-scaled except 
for a diamond-shaped anterior area 
of narrow white scales medially; 
paratergite bare 54 . 
Vertex dorsum all broad-scaled (may 
be a few narrow scales on nape and 
along eye margins) ; paratergite 
scaled (not in platylepidus) 59 
54. All three lobes of scutellum largely 
covered with broad white scales ... 55 
Only mid scutellar lobe with broad 
white scales, lateral lobes covered 
with broad black scales 57^ 
55. Median stripe of scutum extending 
posteriorly to the scutellum 
{Stegomyid) hambusicolus 
Median stripe of scutum extending 
only to level of wing bases 56 
56. An area of broad white scales on the 
^Aedes {Stegomyid) sp. near hoharti is similar to 
hoharti except that all three scutellar lobes are covered 
with broad black scales. 
lateral margin of the scutum just 
before level of wing base 
{Stegomyid) laffooni 
No area of broad white scales on 
lateral scutal margin 
{Stegomyid) arhoricolus 
57. Scales of apn and ppn all dark 
{Stegomyid) alholineatus 
At least some of the scales of ppn pale, 
usually some pale scales on apn 
also 58 
58. Median scutal stripe extending pos- 
teriorly to scutellum; ppn with 
narrow-curved creamy scales only 
{Stegomyia) hoogstraali 
Median scutal stripe extending pos- 
teriorly only to level of wing bases; 
ppn with narrow dark scales dorsally 
and broad white scales below 
{Stegomyid) hoharti 
59. ^ Hind tarsal segments IV-V all dark. 60 
Hind tarsal segments IV-V with white 
markings (V sometimes all dark in 
male of gardnerii) 62 
60. Hind tarsal segment III with only a 
narrow basal white band; proboscis 
with white markings; (scutum with 
prominent white scaling; a lower 
mesepimeral bristle present; hind 
tarsus with narrow basal bands on 
I-III) {Christophersiomyid) brayi 
Hind tarsal segment III dorsally all 
white, or nearly so; proboscis dark- 
scaled . 61 
61. Scutum narrow-scaled, with an obo- 
vate antero -median patch of silvery 
scales; hind tarsal segment II with 
a broad basal band; paratergite 
scaled {Stegomyia) meronephada 
Scutum covered with plate-like broad 
dark scales; hind tarsal segment II 
all dark or with just a very few basal 
white scales; paratergite bare 
(.^) platylepidus 
62. Hind tarsal segment III all dark, 
broad basal bands on I-II, IV-V 
all white (may be some apical black 
scales on V) ; (scutum marked with 
M. wainwrighti at present cannot be keyed beyond 
this point since hind tarsal segments II-V are missing 
from the single known specimen. 
