1. Head. Vertex with erect forked scales numerous, not restricted to occiput (Fig. 44); proboscis with submedian white band (Fig. 45) Ochlerotatus (Finlaya) notoscriptus a

Head. Vertex with erect forked scales not numerous, restricted to occiput (Fig. 46); proboscis without submedian white band (Fig. 47)..................................................... 2

2 (1). Thorax. Scutum black or brown with a pair of submedian­longitudinal white stripes, but without median­longitudianal white stripe, or with white lyre­shaped markings (Fig. 48). Head. Clypeus with white scale patches (Fig. 49)....................................... ......................................................................................... Aedes (Stegomyia) aegypti b

Thorax. Scutum with a narrow median­longitudinal white stripe (Fig. 50). Head. Clypeus without white scale patches (Fig. 51)......................................................... 3

3 (2). Abdomen. Abdominal terga with complete basal white bands (Fig. 52). Thorax. Mesepimeron with white scale patches not separated, forming a V­shaped white patch (Fig. 53) ........................................................... Aedes (Stegomyia) albopictus c

Abdomen. Abdominal terga without complete basal white bands (Fig. 54). Thorax. Mesepimeron with white scale patches separated, or if not separated not forming Vshaped white patch (Fig. 55)..................................................................................... 4

4 (3). Thorax. Lower mesepimeral white scale patch absent or very small, with no morethan 3 scales (Fig. 56).................................................. Aedes (Stegomyia) rotumae d

Thorax. Lower mesepimeral white scale patch present or well developed, with more than 3 scales (Fig. 57)............................................................................................... 5

5 (4). Leg. Hindtarsomere 5 not entirely white or with basal one­half white (Fig. 58)......... ......................................................................................... Aedes (Stegomyia) hensilli e

Leg. Hindtarsomere 5 entirely white (Fig. 59) …………………………….............. 6

6 (5). Abdomen.Some abdominal terga with complete subbasal white bands (Figs. 60 and 61) ........................... Aedes (Stegomyia) scutellaris f and Aedes (Stegomyia) hebrideus f

Abdomen. Abdominal terga without or with incomplete subbasal white bands (Fig. 62).................................................................................................................................... 7

7 (6). Leg. Hindtarsomere 4 usually white for less than 0.67 (Fig. 63)................................ ............................................................................................ Aedes (Stegomyia) cooki g

Leg. Hindtarsomere 4 usually white for more than 0.67 (Fig. 64)............................. ............................................................................... Aedes (Stegomyia) polynesiensis g