AEDES CAMPE8TRIS 627 



have identified Walker's Culex fkmcosta with this species and have placed it in 

 the genus Twniorhynchus. The tarsal clavrs are said to he simple (from an 

 examination of Walker's type) and the wing-scales broad, causing the reference 

 to TcBTiiorhynchus. The species before us has toothed claws and narrow wing- 

 scales. Without an examination of Wiedemann's type it is impossible to be 

 certain of the identification, but we have adopted that of Mr. CoquiUett pending 

 further information about this rare species. Its colorational resemblance to 

 Aides bimaculatus Coquillett is close. We have included the synonyms Ciiiex 

 ochripes Macquart and Culex flavicosta Walker, given by Theobald. His state- 

 ment that the claws of flavicosta are simple is erroneous; Mr. Busck has ex- 

 amined Walker's type of flavicosta in the British Museum and reports that the 

 front and middle claws are plainly toothed. 



The specimens before us show considerable variation in coloration. The 

 specimen from Trinidad shows the abdomen unhanded and covered entirely 

 with dull ochraceous scales. In this specimen the vestiture on the femora and 

 tibiae of the hind legs is long and shaggy, as in Psorophora, and this led 

 Coqtiillett to refer the species to that genus. It is, however, clearly an Aedes, 

 the raised scales having been developed independently. The specimens from 

 Panama and Guatemala show hardly a trace of raised scales on the hind legs, 

 while single ones from Nicaragua and Pard, Brazil, are intermediate in this 

 respect. There is no coordination between the variation in coloration and in 

 the leg scaling; we are inclined to believe that the raised scales of the legs are 

 very dehiscent and that the specimens discussed are all conspecific. Goeldi 

 has created the genus Chrysoconops for Aedes fulvus on accoimt of its striking 

 coloration. Theobald adopted this genus and included in it certain old world 

 species of Mansonia which have similar coloration. 



AEDES CAMPESTRIS Dyar & Knab. 



Aedes campestris Dyar & Knab, Journ. N. Y. Ent. Soc, xv, 213, 1907. 

 Aedes campestris Knab, Smiths. Misc. Colls., quart, iss., 1, 546, 1908. 

 Aedes campestris Theobald, Mon. Culic, v, 485, 1910. 



OBiorNAL Desckiption of Aedes campestris : 



2- — Proboscis straight, clothed with black scales and, on the basal half, with a 

 sprinkling of yellowish gray ones; palpi short, black scaled with lighter scales inter- 

 mixed ; occiput pale ocher-yellow, a dark brownish stripe on each side of the median 

 area, margins of the eyes lighter scaled, collar dark scaled; prothoracic lobes, pleura 

 and coxae roughly yellowish white scaled; mesonotum ochreous yellow, a broad rich 

 brown stripe down the middle, basally two short brown stripes on each side of this; 

 shoulders broadly marked with brown; scutellum pale ochreous scaled, the setae 

 pale shining yellow; abdomen dull yellowish white scaled, the second, third, fourth 

 and fifth segments with large patches of black scales on each side of the middle, 

 reaching the apex but not the base, these patches have a few whitish scales inter- 

 mixed, on the succeeding segments these patches are indicated by a slight sprink- 

 ling of black scales, beneath the abdomen is entirely yellowish white scaled; legs 

 with femora and tibiae pale ochreous yellow scaled with a sprinkling of black scales, 

 which becomes heaviest towards the apices of the tibiae, first tarsal joint yellowish 

 scaled sprinkled with black, the black becoming heavier towards the apex, the apex 

 ringed with yellow-white, second third and fourth joints blackish above, ringed at 

 both ends with yellowish white, the last joint entirely yellowish white, the tarsi 

 show a brassy luster which tends to obscure the markings, on the fore tarsi the 

 markings are more or less obsolete; wingf-veins clothed with narrow dull yellowish 

 white scales with a slight sprinkling of black ones. Claws all toothed. Length, 

 5 mm. 



(J. — Palpi about as long as the proboscis, clothed with yellowish and dark scales 

 Intermixed, the pale scales predominating, the apical half with lateral long dense 

 ferruginous and brown hairs with silky luster; antennae rather short, densely 

 plumose, the hairs pale brown and ferruginous with silky luster; abdomen long, 

 depressed on the apical half, clothed with dull yellowish white scales, the lateral 

 hairs abundant, pale yellow with silky luster. Length, 5.5 mm. 



