Carpenter et al.: Mosquitoes of Southern U. S. 51 



Tarsi entirely dark; costa with no more than two pale spots 3 



3. Costa with a pale spot at outer third opposite tip of subcosta ; anal vein with one 



or two areas of dark scales 4 



Costa dark except for pale spot at extreme tip; vein 6 with three areas of dark 



scales (two m male) crucians crucians Wied., p. 60 



crucians braJlexii King, p. 58 

 crucians georgianus King, p. 64 



4. Veins 3 and 5 entirely dark-scaled; apical half and basal fourth of vein 6 dark- 



scaled punclipennis (Say) , p. 69 



Vein 3 and 5 with long areas of pale scales; apical half of vein 6 dark, basal 

 half white p. pseudopunctipcnnis Theob., p. 66 



5. Wings without spots of dark scales; scutum with setae at least half as long as 



width of scutum; integument of scutum shiny on rubbed specimens; small 



species harberi Coq., p. 55 



Wings with spots of dark scales, more or less disiinct ; scutum with setae rarely 

 half as long as width of scutum; integument of scutum dull on rubbed speci- 

 mens; medium sized species 6 



6. Frontal tuft with some pale setae; wing with four distinct dark spots, palpi 



entirely dark quadrimaculalus Say, p. 73 



Frontal tuft entirely dark; wing usually with indistinct dark spots; segments of 

 palpi with or without distinct while apical rings 7 



7. Knob of halter pale-scaled; segments of palpi with narrow white apical rings; 



knee spots present iDa/^ri Theob., p. 76 



Knob of halter entirely dark scaled; segments of palpi with faint apical white 

 rings or entirely dark; knee spots reduced or absent alropos D. and K., p. 52 



MALE TERMINALIA 



I.Basistyle with one internal spine, two accessory spines, and one parabasal spine 



(Subgenus Niissorhvnchu-) a'bimanus Wied., p. 81 



Basistyle with one internal spine, no accessory spines, and two parabasal spines 

 (Subgenus Anopheles) 2 



2. Phallosome with leaflets; medium sized species 3 



Phallosome without leaflets; small species - barberi Coq., p. 55 



3. Leaflets of phallosome serrated nearly to tips; dorsal lobe of claspette bearing 



three overlapping blade-like filaments on apex 



p. pseudopunctipcnnis Theob., p. 66 



Leaflets of phallosome smooth, although they may bear a few coarse basal teeth; 

 dorsal lobe of claspette bearing spines or stout rods, not blade-like 4 



4. Claspette with dorsal and ventral lobes fused to form a single fleshy conical lobe 



on each side - crucians crucians Wied., p. 62 



crucians bradlevi King, p. 58 



crucians georgianus King, p. 64 



Claspette with dorsal and ventral lobes distinct, at least apically 5 



5. One or more leaflets of phallosome with a few coarse basal teeth; base of disli- 



style without spicules 6 



Leaflets of phallosome without basal teeth; base of dististyle with a spiculate area ....7 



6. One of the spines of dorsal lobe of claspette as wide or wider than apical spine 



of ventral lobe - quadrimaculalus Say, p. 74 



Spine of dorsal lobe narrower than apical spine of ventral lobe 



punctipennis (Say), p. 69 



7. Ante-apical pair of phallosome leaflets not more than one-half the length of the 



apical pair; spicules of dististyle present on basal third to basal half 



alropos D. and K., p. 53 



Ante-apical pair of phallosome leaflets more than half as long as apical pair; 

 spicules of dististyle restricted to the basal sixth ivall^eri Theob., p. 76 



LARVAE (fourth INSTAr) 



1. Frontal hairs (5-7) large, plumose; abdominal segments I-III with hair 6 plumose. ..2 



