PLAIN WINGED CULICES WITH BANDED PROBOSCIS 405 



26. CULEX IMPELLENS, Walker 



(Proc. Linn. Soc. Lond. iv, 91). 



Plate xvi, tig. 3a, Head and appendages ; 3b, Venation of ^ wing. 



Tarsi dark brown, with narrow pale bands on the tibio-tarsal 

 articulations, and three other narrow but distinct basal bands 

 on the fore legs, but only one or two on the mid and hind, and 

 those by no means distinct, especially on the latter. Thorax 

 with a rather pale ground with dark spots on dorsum and pleurae, 

 clothed with golden tomentum. Abdomen brown, with distinct 

 yellow basal bands. Proboscis brown, with a broad yellow band 

 beyond the middle. Wings with the fork cells very long and 

 their bases nearly even ; 4 but little inside 3, especially in S- . 



Head brown, with creamy forked scales in front and two groups of 

 dark ones behind ; palpi nearly black, those of ? , very minute, with a 

 yellowish tip ; of the ^ , somewhat longer than the proboscis, with four 

 yellow bands, of which the two proximal are broad, and the two distal 

 very narrow. Halteres pale yellow. Legs brown, rather short ; the 

 femora paler, with pale knee-spots. Venter banded in the same way as 

 the dorsum of the abdomen, but with the dark parts less distinct. The 

 (^ ungues of the fore and mid legs are unsyinmetrical, with an accessory 

 tooth to each claw ; those of the hind legs and of the ? , equal and 

 simple. Length. — About 4 mm. 



Habitat. — Described originally by Walker, from Makessar, in the 

 Celebes. Appears to be common through the N.W.P., and Punjab, in 

 India, in the autumn, and, together with C. fatigans, is essentially the 

 cold weather gnat of that part of India. Although not so vicious as in 

 the warmer season, it bites, and also breeds to a luoderate extent, for the 

 whole of the cold weather. 



27. CULEX ANNULUS, Theobald (Monog. I, p. 358). 



Tarsi dark brown, with yellow bands on the articulations, but 

 mainly basal, on all but the last joints of the fore and mid legs, 

 but very ill marked on the hind legs. Thorax (denuded) dark 

 brown with pale gold scales, but no sign of adornment. Abdomen 

 deep brown, with broad creamy basal bands widest in the middle, 

 especially in front, so that on the first segment the brown is 

 reduced to a pair of lateral spots. Wing with fork of II || to 

 that of IV, and 4 far internal to 3. Proboscis deep brown, with 

 a broad yellow band rather towards the apical half. 



2 . — Head dark brown, with creamy curved, and dark forked scales ; 

 palpi dark, a little greyish at apex. Scutellum pale brown, with eight 

 border bristles on the middle lobe ; pleurae pallid, with a black spot in 



