28 MOSQUITOES OF NORTH AMERICA 



Abdomen subcylindrical, truncate at tip, dorsal vestiture metallic blue. Ven- 

 ter silvery white, the color separated in a nearly straight but not sharp line; 

 scales suberect along medioventral line ; tip with numerous black bristles. 



Wings narrow, faintly smokj' infuscated ; petiole of second marginal cell half 

 as long as its cell, that of second posterior cell about equal to its cell; basal 

 cross-vein half its length beyond posterior cross-vein; scales of veins moderate, 

 broadly ovate or roundly triangular, black with metallic-green reflection, dense 

 and broader on forks of second vein. Halteres blackish. 



Legs long and slender; scales on outer three-fourths of tibise and first two 

 tarsal joints of the mid legs long and strongly outstanding on two sides, forming 

 paddles ; no paddles present on fore and hind legs, although the scales are some- 

 what roughened on tibiae and base of first tarsal joint; vestiture metallic 

 violet and blue, trochanters silvery white ; femora with a bronzy metallic refiec- 

 tion beneath on the basal portion. Ciliation of paddles black with strong irides- 

 cence in some lights. Claw formula, 0.0-0.0-0.0. 



Length : Body about 5 mm. ; wing 4.5 mm. 



Male. — Proboscis as in the female, with a brassy line on under side, nearly 

 to tip ; palpi short, slender, about one-sixth as long as proboscis ; antennae more 

 plumose than those of the female, the last two joints long and slender, the rest 

 progressively shorter toward the base, but all elongated ; each joint with a large 

 basal whorl of hairs and a small subapical one. Coloration as in the female. 

 Abdomen subcylindrical, slender, metallic blue above, with patches of yellowish 

 silvery scales at apical lateral angles of segments, venter yellowish silvery, the 

 scales raised along the median line ; seventh segment much expanded, metallic- 

 blue sealed above and beneath with yellowish-silvery apical and lateral margins ; 

 tip with dense, coarse, black setae. Wings narrower than in the female, the vesti- 

 ture somewhat less abundant. One claw of mid tarsi simple, the other with a 

 lateral thickening nearly reaching the apex, finely subdivided and forming a 

 subapical serration ; empodium small, spinose at tip. 



Length : Body about 4.5 mm. ; wing 4 mm. 



Genitalia (plate 3, fig. 1) : Side-pieces subconical, the tips conieaUy tapered; 

 basal lobe conical with stout thom-shaped tip. Clasp-filament with a slender 

 stem, curved at base, tip expanded and distorted, divided into several lobes, 

 which are again subdivided, the central one expanded into a bladder, ribbed at 

 its base. Harpes small, slender, curved, tips dentate. Unci small, inconspicuous. 

 Basal appendages a row of spines on each side, borne on a common transverse 

 chitinous base that arises from a roxmded sublateral lobe. Sides of the penulti- 

 mate segment roundedly expanded, densely setose. 



The life history and habits of Sdbethes cyaneus are unknown. The adults are 

 rarely met with, and then only in single specimens. 



Forest regions of South America to Panama. 



Empire, Canal Zone, Panama, June 23, 1908 (A. H. Jennings) ; Empire, 

 Canal Zone, Panama (H. Simms) ; Gatun, Canal Zone, Panama, August 24, 

 September 8, October 30, 1909 (A. H. Jennings) ; Trinidad, British West Indies, 

 November 4, 1905 (P. W. TJrich) ; Paramaribo, Dutch Guiana (H. Polak) ; 

 Par4, Brazil (C. F. Baker). The species is also reported from Manios, Brazil 

 (Lutz in Bourroul) ; Eio de Janeiro, Brazil (Peryassu) ; Amazon region, Hata- 

 tura and Otyba, Brazil; British Guiana (Theobald). 



The name remipes has been in general use for this species, but that of locuples 

 has clear priority. Locuples was wrongly referred as a synonym to longipes 

 Fabricius, and so disappeared from the literature ; but it has been shown that 

 locuples and remipes refer to the same species. Lately Knab has shown that the 



