810 MOSQUITOES OF NORTH AMERICA 



bate, brown, clothed with narrow, curved dull golden scales, each lobe with a 

 group of blackish bristles. Postnotum elliptical, prominent, dark brown, nude. 

 Pleurse brown, coxae hiteous, clothed with patches of elliptical white scales and 

 rows of pale bristles. 



Abdomen subcylindrical, somewhat flattened, tapering posteriorly; dorsal 

 vestiture black with a slight metallic reflection, very narrow incomplete bands 

 of sordid white scales at bases of segments, obsolete outwardly, a row of tri- 

 angular lateral basal segmental yellowish white patches; first segment black- 

 scaled, a few pale ones laterally, and many fine pale yellowish hairs; venter 

 yellowish-white scaled. Cerci black. 



Wings rather broad, hyaline; petioles of second marginal and second pos- 

 terior cells shorter than their cells and about equal; basal cross-vein distant 

 nearly its own length from anterior cross-vein ; scales brown, the outstanding 

 ones narrowly ligulate, dense and broader on forks of second vein. Halteres 

 blackish, with whitish knobs. 



Legs slender, moderately long; vestiture bronzy-black with a bluish luster; 

 femora beneath yellowish-white except at tips, under sides of fore and mid tibiae 

 narrowly whitish scaled. Claw formula, 1.1-1.1-1.1 or 1.1-1.1-0.0. 



Length : Body about 4 mm. ; wing 3.5 mm. 



Life history and habits unknown. 



Island of Santo Domingo. 



Santo Domingo, August, 1905 (A. Busck). 



As remarked in the discussion of Aedes hracteatus, this species is the repre- 

 sentative in Santo Domingo of that Cuban species. The claws of the hind legs 

 may be either toothed or simple. The tooth, when present, is very delicate and 

 easily escapes observation. There is considerable variation in coloration. On 

 the mesonotum the deep brown coloration sometimes extends all along the sides, 

 being indented behind the middle by the golden median area. 



AEDES LEUCOMELAS (Lutz). 



Bosmagogus Teucomelas Lutz in Bourroul, Mosq. do Brasil, 47, 66, 1904. 

 Stecogonops leucomelas Lutz, Imprensa Medica, 1905, 101, 1905. 

 Hwmagogus leucomelas Theobald, Men. Culic, iv, 551, 1907. 

 Btegoconops leucomelas Peryassu, Os Culic. do Brazil, 169, 1908. 

 Ewmagogus leucomelas Theobald, Men. Culic, v, 493, 1910. 

 Stegoconops leucomelas Theobald, Men. Culic, v, 606, 1910. 



Oeiqinal Descbiption of Stegoconops leucomelas : 



FEME A: Comprimento total 4.5 mm., menos a tromba que mede 2 mm. 



TromM Muito delgada e de grossura igual em todo o comprimento, preta com o 

 apex dos labellos um pouco amarellado, coberta de escamas muito appostas, pretas, 

 com brilho azul escuro; na haste e nos labellos s6 ha pellos muito curtos e finos; 

 apenas na raiz, do lado de baixo, ha alguns pellos maiores. 



Palpos Geralmente um tanto erectos, com escamas de azul metallico muito 

 escuro, e pellos pretos. 



Clypeus Preto com brilho branco. 



Frons e vertex anterior com algumas escamas estreitas, compridas e curvadas e 

 alguns pellos inclinados para diante; ambos dourados. 



Antennas Os tori pretos, com brilho branco, mostrando no lado interne pequenas 

 escamas e pellos finos e curtos; o flagello 4 preto com anneis brancos nas artlcu- 

 lagoes; algumas escamas espatuladas escuras na base, principalmente do lado in- 

 terne; 03 verticillos sao pouco visiveis, sendo formados por pellos finos e escuros. 



Occiput Coberto de escamas chatas, obovaes ou espatuladas, imbricadas e diri- 

 gidas para diante; formam no meio uma large faxa branco-nacarada, principiando 

 no vertex, na altura das margens posterlores dos tori e terminando na cervix, de 

 modo a deixar lugar a uma colleira geralmente pouco visivel, formada por escamas 

 erectas e bifurcadas, de cor escura; ao lado da faxa branca ha escamas de azul 

 metallico escuro, as quaes nas regioes lateraes e mental sao substituidas por outras 

 branco-nacaradas, sendo a linha de separagao obliqua. 



