CULEX PINAKOCAMPA 251 



Larva, Stage IV (plate 103, fig. 341). — Head rounded, wider than long, 

 transversely elliptical; antennae long, stout, more slender on the outer third, 

 the hair-tuft from outer third large, the terminal spines long; dorsal head- 

 hairs multiple, long. Abdomen with the skin glabrous, the lateral tufts multiple 

 on first two segments, in twos on third to sixth. Lateral comb of eighth segment 

 of rather few spines sparsely set in a patch three rows deep. Air-tube tapered 

 on outer half, about six times as long as wide, the terminal hooks minute ; pecten 

 of about ten short, evenly spaced teeth on basal third of tube ; three hair-tufts 

 along posterior margin, two more between the outer two of these, situated more 

 dorsally, one considerably dorsal of the other, all the tufts two-haired except 

 the outermost, which is three-haired. Anal segment longer than wide, ringed 

 by the chitinous plate; dorsal tuft of four hairs of different lengths on each side; 

 lateral hair short, double ; ventral brush large, confined by the chitinous plate. 

 Anal gills long, tapering, equal. 



The larvae live in the water between the leaves of Bromeliaceae. Mr. Knab 

 collected them in three instances in such situations. In a coffee-grove, three 

 plants were removed from a mango tree about 30 feet from the ground. One 

 contained no water; another contained this species associated with Wyeomyia 

 abebela; the third was much choked with rubbish and contained this species 

 without other mosquito larvae. On the same tree other bromelias were growing 

 at a height of 50 feet, from one of which this species was obtained, associated 

 with Oulex rejector and Megarhinus superbus. The larvae grew rapidly. 



Mexico. 



Cordoba, larvae from bromelias, March 17 and 21, 1908 (P. Knab). 



Culex stenolepis does not agree in its characters with the species of Culex 

 which are regular inhabitants of Bromeliaceas, either in adult or larval char- 

 acters. Nevertheless, such appear to be its habits ; we have received the species 

 from no other locations. Mr. Knab notes that the larvae developed rapidly, 

 which is also at variance with the habits of the normal bromelia inhabitants. 

 The species is evidently a peculiar one. 



CULEX PINAROCAMPA Dyar & Knab. 



Culex pinarocampa Dyar & Knab, Proc. U. S. Nat. Mus., xxxv, 59, 1908. 

 Culex pinarocampa Theobald, Mon. Culic, v, 616, 1910. 



Origin AL Descbiption of Cctlex pinarocampa: 



Female. — Proboscis moderately long and slender, not distinctly swollen at the tip; 

 black-scaled above and beneath; palpi black-scaled; occiput clothed with recumbent 

 whitish and bronzy brown scales and with upright dark forked ones; the whitish 

 scales form a margin to the eyes, a median line and large lateral patches; mesonotum 

 bronzy brown-scaled, with several spots of light scales — a pair of median subdorsal 

 spots, a pair farther forward at the lateral margin, another pair above the roots of 

 the wings; the front margin is light-scaled, as also the margin of the antescutellar 

 bare space; scutellum light-scaled, with a brassy luster; abdomen above black-scaled, 

 with bluish luster, the segments with narrow basal bands, which are broadened 

 mesially on all but the last two segments; on the last three segments the bands are 

 expanded toward the lateral margins; ventrally the abdomen is pale-scaled, the 

 apices of the segments obscurely dark-banded; femora dark-scaled above, light-scaled 

 beneath nearly to the apices, knees yellowish white-scaled; tibiae yellowish white- 

 scaled at bases and apices, tarsi of all the legs with the first, second, third, and fourth 

 joints yellowish white-ringed at bases and apices; mid and hind legs with the fifth 

 tarsal joint entirely yellowish white-scaled; last tarsal joint of the fore legs in part 

 obscurely bronzy-scaled; wings with the scales along the veins dusky, long, and very 

 narrow; claws simple. Length, 5.5 mm. 



Male. — Proboscis stouter than in the female, black-scaled, with a white mark on 

 the ventral surface before the middle; palpi long and slender, dark-scaled, longer 

 than the proboscis, with narrow yellowish white annulations, more than half of the 

 apical portion clothed with long hairs; head and thoracic markings as in the female; 

 abdomen long and slender, black-scaled above, with clear white basal segmental 



