Key for the Identification of Adult Female Mosquitoes Associated with Dengue Virus Transmission in the Afrotropical Region

1. Head. Vertex with broad erect forked scales numerous, not restricted to occiput (Fig. 1); proboscis with a white band (Fig. 2)....................................................................... 2

Head. Vertex with erect forked scales not numerous, restricted to occiput (Fig. 3); proboscis without a white band (Fig. 4)............................................................................. 3

2 (1). Abdomen. Speckled dorsally (Fig. 5) .......................... Aedes (Diceromyia) furcifer a......................................................................................................................................

Abdomen. Not speckled dorsally (Fig. 6) ..................... Aedes (Diceromyia) taylori b

3 (1). Leg. Femora with white knee­spot (Fig. 7); midfemur without 3 large white patches on anterior surface (Fig. 8); hindtarsomere 5 entirely white (Fig. 9)........................ 4

Leg. Femora without white knee­spot (Fig. 10); midfemur with 3 large white patches on anterior surface (Fig. 11); hindtarsomere 5 entirely dark (Fig. 12)..................... 5

FIGURE 7. FIGURE 8. FIGURE 11. FIGURE 9. Aedes (Stegomyia) aegypti

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FIGURE 12. Aedes (Stegomyia) africanus

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4 (3). Thorax. Scutum black or brown with a pair of submedian­longitudinal white stripes, but without median­longitudinal white stripe, or with white lyre­shaped markings (Fig. 13); mesepimeron with two well separated white scale patches (Fig. 14). Leg. Anterior portion of midfemur with a longitudinal white stripe (Fig. 15). Head. Clypeus with white scale patches (Fig. 16)..................... Aedes (Stegomyia) aegypti

Thorax. Scutum with a narrow median­longitudinal white stripe (Fig. 17); mesepimeron with white scale patches not separated, forming V­shaped white patch (Fig. 18). Leg. Anterior portion of midfemur without a longitudinal white stripe (Fig. 19). Head. Clypeus without white scale patches (Fig. 20)................................. ...................................................................................... Aedes (Stegomyia) albopictus

FIGURE 15. Aedes (Stegomyia) aegypti. FIGURE 19. Aedes (Stegomyia) albopictus.

5 (3). Leg. Hindfemur anteriorly with a large pale band at base and with 2 large, white patches on median and apical areas (Fig. 21); hindtarsomere 4 entirely dark (Fig. 22) ............................................................................... Aedes (Stegomyia) luteocephalus c

Leg. Hindfemur anteriorly without such a pale band at base, or hindfemur anteriorly with 3 large, white patches on subbasal, median and apical areas (Fig. 23); hindtarsomere 4 not entirely dark, usually with short subbasal white band (Fig. 24)........... 6

FIGURE 21. FIGURE 23. Aedes (Stegomyia) africanus. FIGURE 22. FIGURE 24. Aedes (Stegomyia) africanus.

6 (5). Thorax. Fossal white patch narrow at base along scutal margin (Fig. 25 A); prescutellar line of narrow yellow scales absent or sometimes with a few narrow yellow scales (Fig. 25 B). Leg. Hindtibia anteriorly dark with a white stripe on posterior surface in basal 0.20 or more (Fig. 26) ............................ Aedes (Stegomyia) africanus d......................................................................................................................................

Thorax. Fossal white patch broad at base along scutal margin (Fig. 27 A); prescutellar line of narrow yellow scales well developed and with some broad, flat metallic white scales posteriorly (Fig. 27 B). Leg. Hindtibia anteriorly dark with a white stripe on posterior surface in basal 0.10 or less (Fig. 28) ... Aedes (Stegomyia) opok e