FAMILY CULICID.E THE MOSQUITOES 95 



14. CI ypeus with setae Joblotia Blanchanl 



Clypeus without setas 15 



15. Lower steinopleuial sets extending: above the upper margin of the 



metasternal sclerite Goeldia TheobaUl 



Lower sternopleural setse not extending above the upper margin of 

 the metasternal sclerite (I-l) Isostomyia Coquillett 



16. Anal vein ending opposite or before the fork of the fifth vein. 



Uranotaenia Arribalzaga 

 Anal vein ending well beyond the fork of the fifth vein 17 



17. Prescutellar sette and postspiracular setse absent (III-4, III-5). 



Haemagogus Williston 

 Px-escutellar setae present IS 



IS. Postspiracular setaj present 19 



Postspiracular sette absent 21 



19. Spiracular setae absent 20 



Spiracular setae present (1-4 and text figure) Psorophora Desvoidy 



20. Wing scales narrow (rarely broad) or the base of first vein with setae 



posteriorly on the upper side (II-ll, III-3, and text figs.).Aedes Meigen 

 Wing scales broad; base of first vein bare (11-10) . . . . Mansonia Blanchard 



21. Spiracular setae present (1-2) Theobaldia Neveu-Lemaire 



Spiracular setae absent 22 



22. First vein without sette basally on upper side; wing scales broad 23 



First vein with setae basally on upper side; wide scales narrow 25 



23. Fourth segment of front tarsi at least as broad as long (11-6). 



Orthopodorayia Theobald 

 Fourth segment of front tarsi longer than wide 24 



24. Antennal segments little longer than wide Aedeomyia Theobald 



Antennal segments much longer than wide (11-10).. . .Mansonia Blanchard 



25. Antenna much longer than the length of the proboscis (II-7). 



Deinocerites Theobald 

 Antennae not longer than the length of the proboscis 26 



26. Wings yellowish, spotted with black Lutzia Theobald 



Wings never black-spotted (II-9 and text figure) Culex Linnaeus 



KEY TO THE GENERA OF THE WORLD 



1. Scales almost confined to the wing-fringe; mouth-parts short, the 



palpi incurved (Chaoborinae) 2 



Wing-veins and legs scaled; proboscis long; palpi not incurved 

 (Culicinae) 7 



2. Clypeus large and hairy; Ri ending close to tip of R- 3 



Clypeus small and nearly bare; R, ending far from tip of R^. 



Corethrella Coquillett 



3. First tarsal segment much shorter than the second 4 



First tarsal segment longer than the second 6 



4. Tibiae spurred 5 



Tibiae not spurred; metapieural hairs absent Mochlonyx Loew 



