CULEX HABILITATOR 263 



14. Air tube long, over 5X1, the sides nearly straight without marked 



tapering 15 



15. Body spicular-pilose 16 



16. Air tube 8X1, the tufts 3-haired and short; antennae dark 



habilitator 



Descbiption of Male and Larva of Culex habilitator (Female Unknown) : 



Male. Proboscis moderate, subcylindrical, slightly thickened at apex, labellae 

 conically tapered; vestiture black, broadly pale beyond the middle. Palpi ex- 

 ceeding the proboscis by the length of the last joint ; apex of long joint and last 

 two joints slightly thickened and bearing numerous rather dense black hairs; 

 vestiture brownish black. Antennae plumose, with the last two joints long and 

 slender, rugose, pilose, black, the others short, whitish, with black rings at in- 

 sertions of hair-whorls ; hairs long, dense, and black ; tori subspherical, with a 

 cup-shaped apical excavation, brown, blackish vidthin. Eyes black. Clypeus 

 rounded triangular, dark brown, nude. Occiput brown, clothed with narrow, 

 curved, pale brownish-yellow scales dorsally, flat ones on the sides, margin of 

 eyes narrowly white; many erect, forked black scales on the nape. 



Prothoracic lobes elliptical, remote dorsally, brown, with many black setae. 

 Mesonotum brown, clothed with narrow, curved lustrous-brown scales and rows 

 of brown bristles, the scales around the ante-scutellar space a little paler. 

 Scutellum trilobate, with a few narrow, curved pale scales, each lobe with a tuft 

 of black bristles. Postnotum elliptical, luteous, nude. Pleurae and coxas luteous, 

 with a green tint, with small pale setas. 



Abdomen subcylindrical, expanded posteriorly; dorsal vestiture black, each 

 segment, except the first, with a very narrow white band at base, widening into 

 triangular spots at the sides, especially on sixth and seventh segments ; venter 

 whitish, tips of segments broadly black; lateral hairs abundant, moderately 

 long, pale. 



Wings moderate, hyaline ; petiole of second marginal cell shorter than its cell, 

 that of second posterior cell nearly equal to its cell ; basal cross-vein more than 

 its own length from anterior cross- vein ; vestiture brown, sparse, the outstand- 

 ing scales rather broadly linear. 



Legs moderate, black, femora white beneath, tibiae with a pale line on the 

 under side; hind tarsal joints very narrowly white ringed at base and apex, 

 except tip of last joint; mid and front tarsi with the first two joints ringed at 

 base and apex, the third at base only. Claw formula, 1.1-1.1-0.0. 



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



Grenitalia (plate 14, fig. 96) : Side-pieces three times as long as wide, tips 

 conically tapered ; marginal appendage on a narrow truncated subapical promi- 

 nence consisting of a single rod. Clasp-filament strongly inflated in middle on 

 outer side, with a slender terminal appendage. Harpes furcate, the inner lobe 

 produced, bearing a crown of dense spines. Harpagones divided into several 

 plates, a stout, long, jointed process arising from a basal arcuate bar on each side. 

 Basal appendages rounded, bearing several short setae. 



Larva, Stage IV (plate 100, fig. 332) . Head transverse, widest through eyes, 

 rounded on the sides, a large notch at insertion of antennae, front margin 

 arcuate. Antennae large, slightly curved, basal two-thirds thick and well spined, 

 with a tuft from a notch ; two large setae before the tip, a long seta, a short 

 seta, and a digit. Upper head-tufts of four or five hairs, lower of three, ante- 

 antennal tuft multiple. Mental plate triangular, rather straight on sides; a 

 large central tooth and ten on each side, the last two small, the ones before large 

 and projecting. Mandible quadrangular; two filaments and a tuft of hairs 

 before tip; an outer row of cilia from a collar; a row of rounded transverse 

 prominences on outer margin bearing hair-tufts ; dentition of four teeth on a 



