THE MOSQUITOES OF THE SOUTHEASTERN STATES 61 



the males of the subgenus Oulex. This key is preceded by a synopsis 

 of the principal divisions. 



Mosquitoes having long palpi in both sexes Couplet 2 



Genus Anopheles 2 



Mosquitoes having a rigid proboscis, down-curved on outer half ; very large, 



iridescent species 10 



Genus Megarhinus 10 



Mosquitoes having the second marginal cell very short ; very small species 



having iridescent thoracic markings 12 



Genus Uranotaenia 12 



Mosquitoes without tarsal or mesonotal markings 14 



Genus Deinocerites 14 



Genus Psorophora (P. cyanescens) ; Aedes (A. cinereus) 16 



Genus Gulex (except C. corniger and C. tar sails) ; Theobaldia 17 



Mosquitoes with tarsal or mesonotal markings, or both 25 



Large species, with long, erect scales on femora and tibiae; the galli- 



nippers 26 



Genus Psorophora (Psorophora) 26 



Bright yellow species 27 



Genus Aedes (A. bimaculatus) 27 



Species with both tarsi and proboscis ringed 29 



Genus Mansonia 30 



Genus Culex (C corniger and C. tarsalis) 33 



Genus Aedes (taeniorhynchus group) 34 



Genus Psorophora (Oraohamia) 36 



Species with tarsal rings or bands but the proboscis not ringed 39 



Genus Psorophora (Janthinosoma, part) 40 



Genus Aedes (A. aegypti, A. vexans, etc.) 44 



Genus Orthopodomyia 46 



Genus Wyeomyia 59 



Species with tarsi and proboscis unbanded, but with thoracic markings- 52 



Genus Aedes (A. infirmatus, A. triseriatus, etc.) 52 



1. Female palpi as long as proboscis or nearly so (fig. 1, A). [Abdomen 



not covered with flat scales ; scutellum evenly rounded ; wings usually 

 spotted; male palpi long, clubbed at tip (fig. 1, D).] Tribe Anophelini, 



genus Anopheles 2 



Female palpi much shorter than proboscis. [Abdomen covered with 

 flat scales; wings usually unspotted; male palpi not clubbed at tip.] 



2. Wings with areas of white scales 8 



Wings entirely dark-scaled 6 



3. Tarsi dark 4 



Tarsi with conspicuous white rings. [Hind tarsi with segments 3 and 



4 and the apical half of segments 2 and 5 white ; a narrow white 

 ring at apex of segment 1 ; some of segments on other tarsi narrowly 

 ringed; wings well spotted with white.] A tropical species, reported 

 once from Key West Anopheles albimanus 



4. Costa with a white spot at the outer third (opposite tip of subcostal 



vein) ; anal vein with one or two areas of dark scales 5 



Costa dark except at extreme tip of wing; anal vein with three dark 

 spots separated by white (two spots in male). [Apical segment of 

 palpi pale and segments 3 and 4 with narrow pale bands or a few 

 pale scales at the joints.] Anopheles crucians 



5. Veins 3 and 5 entirely dark-scaled. [Subcosta and vein 1 dark opposite 



base of vein 2; apical half and basal one-fourth of anal vein dark- 

 scaled ; palpi dark ; mesonotum with a wide median frosted stripe, 

 the sides dark.] Common in certain parts of the South 



Anopheles punctipennis 

 Veins 3 and 5 with long pale areas centrally. [A white spot on subcosta 

 and vein 1 opposite base of vein 2; apical half of anal vein dark, 

 basal half white; apical palpal segment pale and a narrow ring 

 at base of fourth segment.] Has been taken occasionally in Louisiana 

 and Tennessee Anopheles pseudopunctipennis 



6. Wings with spots of dark scales, more or less distinct, or palpi with 



rings of white scales; mesonotal bristles mostly short 7 



Mesonotal bristles very long, average length about one-half width of 

 mesonotum; wings unspotted; palpi and legs dark-scaled. A small, 

 rare tree-hole breeder Anopheles barberi 



