>^1 



Vol. XXIX, pp. 161-164 September 6, 1916 



PROCEEDINGS 



OF THE 



BIOLOGICAL SOCIETY OF WASHINGTON 



A NEW MOSQUITO FROM THE EASTERN UNITED 



STATES. 



BY FREDERICK KNAB. 



The new species of Cidex described below has been recently- 

 brought to light by Mr. Herman H. Brehme, well known in 

 connection with the mosquito work in New Jersey. 



Culex brehtnei new species. 



Female. — Occiput clothed with narrow curved scales, white and dense 

 in a median line and along margins of eyes, the others bronzy brown and 

 more sparse, numerous erect forked black scales ; cheeks clothed with 

 broader fiat white scales. Clypeus dull blackish, nude. Proboscis 

 moderately long and slender, nearly uniform throughout, black scaled, 

 beneath with pale reflection most distinct medianly. Palpi less than 

 one-fifth the length of the proboscis, black scaled. 



Mesonotum deep brown, clothed with narrow curved scales, for the 

 most part bronzy brown and rather sparse, the integument showing be- 

 tween them, slightly coarser and denser yellowish white scales along 

 margins, in a pair of dots on the disk, and short broad stripes at sides of 

 antescutellar area. Scutellum with yellowish white scales and three 

 groups of black bristles. Pleurge brownish gray, pruinose, tinged with 

 greenish below, and with a few small patches of white scales. Postnotum 

 dull yellow-brown, nude. 



Abdomen depressed, truncate at tip; dorsal vestiture of dull black 

 scales, the segments with broad yellowish white basal bands, that on 

 second segment slightly produced in the middle, the others produced tri- 

 angularly at the sides, broadly so and dorsally visible on seventh and 

 eighth segments; venter clothed with dirty yellowish white scales, each 

 segment with a ragged median patch of black scales. 



Legs rather long and slender, black scaled, the femora white scaled 

 beneath to apices; knees and tips of tibiae narrowly white scaled; tibiae 

 with a line of pale scales along ventral surface, on hind legs continued to 

 ends of tarsi. Claws simple. 



32— Pboc. Biol. Soc. Wash.. Vol. XXIX, 1916. (161) 



