CULEX KEDTJCTOR 401 



Obioinai, Description or Culex beductob: 



We propose this name to replace Mochlostyrax jamaicensis Grabham, since when 

 Mochlostyrax is placed as a synonym of Culex, as we find necessary, Dr. Grabham's 

 name becomes preoccupied by Oulex jamaicensis Theobald. Theobald's species was 

 later placed by him in the genus Orabhamia, and by us in Aedes, but the name Culex 

 jamaicensis can not again be used. 



Descbiption of Female, Male, and Labta of Culex eeductoe: 



Female. — Proboscis moderate, swollen at tip, labellse conically tapered ; vesti- 

 ture black with a bronzy reflection ; setae minute, curved and black, those on the 

 labellse more prominently outstanding. Palpi short, one-fifth as long as pro- 

 boscis, black, with a few outstanding setae at base. Antennae moderate ; joints 

 subequal, rugose, pilose, blackish, second joint a little longer than third; tori 

 subspherical, with a cup-shaped apical excavation, luteous, shadiag to brown 

 within; hairs of whorls sparse, moderate, black. Clypeus rounded triangular, 

 convex, brown, nude. Eyes black. Occiput blackish, clothed with broad, flat 

 black scales with a pale gray reflection in some lights ; some scales along ocular 

 margin gray ; a patch of dull white scales well down the side ; many erect, forked 

 black scales dorsaUy ; a row of bristles along margins of eyes. 



Prothoracic lobes elliptical, remote dorsally, clothed with pale scales and 

 brown bristles. Mesonotum brown, clothed with narrow, curved, dark bronzy- 

 brown scales and rows of dark brown bristles. Scutellum trilobate, with similar 

 vestiture to mesonotum, with a group of black bristles on each lobe. Postnotum 

 elliptical, prominent, brown, nude. Pleurae and coxae luteous shaded with 

 brownish, with patches of elliptical white scales and rows of brown bristles. 



Abdomen subcylindrical, depressed, truncate at tip; dorsal vestiture black 

 with a bronzy and blue reflection, a row of lateral, triangular, basal segmental, 

 whitish patches ; venter blackish scaled, a broad whitish band at base of each seg- 

 ment ; posterior margins of segments with rather coarse pale hairs ; apex of abdo- 

 men, particularly beneath, densely hairy. 



Wings moderate, hyaline ; petiole of second marginal cell one-third as long as 

 its cell, that of second posterior cell shorter than its cell ; basal cross-vein distant 

 twice its length from anterior cross- vein; scales of veins brown, with a blue 

 reflection along costa, most of outstanding ones ovate on second to fourth veins 

 outwardly. Halteres whitish, with blackish knobs. 



Legs moderate ; vestiture black with a blue and bronzy reflection on tibiae and 

 tarsi ; femora whitish beneath except at tips. Claw formula, 0.0-0.0-0.0. 



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



Male. — Proboscis long, straight, slender, gradually enlarged towards apex, 

 black scaled. Palpi exceeding the proboscis by nearly the length of the last two 

 joints, which, with end of long joint, are slightly enlarged and moderately 

 hairy; vestiture entirely brownish black. Antennae plumose; last two joints 

 long and slender, rugose, pilose, black; the others short, whitish, with black 

 rings at insertions of hair-whorls; hairs of whorls long, brown. Coloration 

 similar to the female. Abdomen elongate, subcylindrical, expanded apically; 

 lateral spots visible dorsally on fourth to seventh segments, eighth segment 

 white dorsally; lateral ciliation coarse and dense, brown, but not forming a 

 distinct lateral fringe. Wings narrower than in the female, the stems of the 

 fork-cells longer, vestiture sparser. Claw formula, 1.0-1.0-0.0. 



Length: Body about 3 mm.; wing 2.5 mm. 



Genitalia (plate 11, fig. 77) : Side-pieces over twice as long as wide, tips con- 

 ically tapered, median prominence divided into two portions, outer one bearing 

 seven rods which are separated partially into three groups, the inner one furcate 

 and bearing a filament on each fork, tips of filaments expanded and pointed. 

 Clasp-filament enlarged at base, slender in middle, tip partially divided, swollen, 



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