676 MOSQUITOES OF NOETH AMERICA 



Aedes fletcheri Dyar & Knab, Journ. N. Y. Ent. Soc, xv, 11, 1907. 

 Aedes fletcheri Knab, Smiths. Misc. Colls., quart, iss., 1. 544, 1908. 

 CuUcada arcanus Theobald, Mon. Culic, v, 301, 1910. 

 Culex fletcheri Theobald, Mon. Culic, v, 485, 1910. 

 Culex arcanum Theobald, Mon. Culic, v, 485, 1910. 



Original Description or Culex flavescens : 



Thorax golden scaled; abdomen entirely covered with ochraceous scales; legs 

 brown, with the tarsi and metatarsi very broadly basally banded, pale ochraceous. 



9. Head densely covered with narrow golden-yellow curved scales, upright brown 

 and black forked scales; antennae yellowish at the base, brown apically, basal joint 

 bright ochraceous; palpi ochraceous with brown scales; proboscis unhanded. 



Thorax brown, densely covered with curved hair-like golden scales; scutellum 

 brown, with narrow curved pale golden scales, the mid lobe with several rows of 

 long golden-brown bristles; metanotum chestnut-brown; pleurae ochraceous. 



Abdomen densely clothed with ochraceous scales, with a few black ones dotted 

 about in one specimen; coxae ochraceous; femora ochraceous; tibiae pale brown; 

 metatarsi very pale ochraceous and also the tarsi, with black apices, giving them a 

 broadly basally pale banded appearance. 



Wings scaled much as in C. pipiens, first sub-marginal cell longer and narrower 

 than the second posterior cell, the bases of the two fork-cells nearly level; second pos- 

 terior cell rather short and broad; posterior cross-vein not quite its own length 

 distant from the mid cross-vein ; stem of the first sub-marginal cell not quite as long 

 as the cell, stem of the second posterior cell as long as the cell. 



Ungues of the fore and mid legs thick, uniserrated, equal. 



Length. 6 mm. 



Habitat. Unknown. 



Observations. Described from four old specimens in the Hope Collection at 

 Oxford. Three were named Culex lutescens, one Culex flavescens. There are no data 

 attached. They are certainly not C. lutescens, Fabr., for the tarsi are banded, whilst 

 In C. lutescens the tarsi are brown. They resemble in form C. cantans, but the 

 abdomen is densely clothed with ochraceous scales, and the metatarsi and tarsi are 

 really pale ochraceous with narrow black apical bands. 



Original Description of Citt.ex fletcheri: 



Head black, scales of occiput narrow, golden brown, on each side a patch of 

 broad, appressed yellow ones, antennae brown, the first joint and bases of the second 

 and third yellow, palpi yellowish brown, proboscis black, the median portion brown; 

 body black, metanotum brownish yellow, scales of thorax golden brown, the bristly 

 hairs and those on the scutellum golden yellov/, abdomen wholly covered with 

 pale yellow scales; femora yellow, the apices and tibiae blackish, the scales mixed 

 white, yellow and black, not forming distinct bands; tarsi black, the bases yellowish 

 brown, a band of white scales at bases of the three median joints on the front and 

 middle tarsi, of the last four joints of the hind ones, claws very large, toothed; wings 

 hyaline, veins yellow, scales sparse, small, those near base of wings chiefly yel- 

 lowish, the others brown, the lateral ones on first four veins and upper branch of the 

 fifth very narrow and elongate, petiole of first submarginal cell about half the 

 length of that cell, crossvein at apex of second basal cell about its length from 

 the one above it; halteres yellow, the knobs brown; length, 6 mm. Two females 

 collected by Dr. James Fletcher, for whom this unique species is named. 



Habitat. Carnduff, Assiniboia, British America. 



Type. Cat. No. 6255, U. S. N. M. 



Description of Female, Male, and Larva of Aedes fletcheri: 



Female. Proboscis moderate, subcylindrical, flattened, uniform ; vestiture of 

 brown-black scales with a few pale ochreous ones intermixed, the labellse black ; 

 setae minute, black, curved, those on the labellse more prominently outstanding. 

 Palpi stout, rather long, more than one-fourth as long as the proboscis ; vesti- 

 ture of black scales with a few pale ones ; setae few and long, black. Antennae 

 with the joints subequal, rugose, pilose, black, second joint somewhat thickened, 

 yellow; tori subspherical, with a cup-shaped apical excavation, ocher yellow, on 

 the inner side black and with small, flat, broad whitish scales. Clypeus shortly 

 conical, prominent, convex, black, nude. Eyes black. Occiput rather broad, 

 clothed very broadly with dense, narrow, curved, brassy scales on the vertex, a 

 large patch of golden brown ones on each side close to the eyes ; cheeks narrow, 



