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SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 139 



Scl 2 PN 2 N 3 



Fig. 27. — Details of the adult thorax and abdomen. 



A, Aedes aegypti, male thorax and abdomen. B, Same, end of abdomen ex- 

 tended. C, Same, thorax and base of abdomen, dorsal. D, Same, postnotum of 

 metathorax extended as a phragma into base of abdomen, ventral. E, Same, 

 tenth abdominal segment of male, lateral. F, Same, undersurface (dorsal). G, 

 Same, showing dorsal muscles of first abdominal segment. H, Culex, end of 

 female abdomen, ventral. I, Same, lateral. J, Composite diagram of female 

 terminalia, lateral (from Gerry 1932). K, Same, ventral, with ventral arc of 

 sigma (c) turned forward (from Gerry 1932). 



a, cowl; An, anus; b, dorsal arc of sigma (ninth sternum?) ; c, ventral arc of 

 sigma; Cer, cercus; Gtr, gonotreme (opening of genital chamber) ; Hit, halter; 

 N, notum; pgpl, postgenital plate; Ph, phragma; Pmr, paramere; PN, post- 

 notum ; s, lateroventral prong of tenth segment ; S, sternum ; Scl, scutellum ; 

 Set, scutum ; t, tergum of tenth segment ; T, tergum. 



Subnumbers 1-3, thoracic segments ; I-X, abdominal segments. 



