968 MOSQUITOES OF NORTH AMERICA 



Description of Female, Male, and Larva of Anopheles aegyeitarsis : 



Female. Proboscis moderate, slightly thicker towards base, straight; vesti- 

 ture black ; labellas long, lanceolate, dark, with a few outstanding setae. Palpi 

 as long as the proboscis, uniform, roughly clothed with long spatulate scales, 

 roughest on basal third, black, last Joint silvery white and narrow white rings 

 at the two preceding articulations. Antennse filiform; joints short, subequal, 

 blackish, densely whitish pilose ; second joint much longer than succeeding one, 

 slightly thickened, with some lanceolate white scales; hairs of whorls short, 

 sparse, black with white luster; tori small, subspherical, with an apical cup- 

 shaped excavation, piceous with grayish pruinosity and a few broad white scales. 

 Clypeus prominent, sub triangular, blackish, nude. Eyes well separated at 

 vertex, black. Occiput dark, clothed with semi-erect elliptical and broad forked 

 white scales on the vertex, broad black ones on the sides, a group of long white 

 hair-like scales projecting forward on the vertex ; a row of dark setre along mar- 

 gins of eyes. 



Prothoracic lobes small, lateral. Mesonotum elongate, narrow, flattened, dark 

 gray; vestiture of rather sparse, small lanceolate, curved white scales and with 

 rows of short black bristles ; two narrow, longitudinal, submedian bare lines on 

 anterior half and two broader bare lines sublaterally on posterior two-thirds; 

 three velvet-black spots, one before scutellum, the other two at anterior ends of 

 the sublateral posterior stripes. Scutellum collar-like, uniform, dark gray, with 

 a marginal row of black bristles and clothed with small white scales like those 

 of the mesonotum. Postnotum elliptical, prominent, blackish, nude. Pleurae 

 and coxe blackish brown, pruinose, with rows of black bristles, and with small 

 groups of silvery-white scales along the sutures and on the coxae. 



Abdomen subcylindrical, flattened, subtruncate at tip, blackish, densely 

 clothed with scales; dorsal vestiture of dull yellowish-white scales, with large 

 ill-defined patches of blackish-brown roughened scales at apical angles of seg- 

 ments ; eighth segment with a broad apical band of dark scales ; numerous coarse 

 dark bristles, particularly at sides ; venter with a few white scales in the middle, 

 some black ones on the last segment. 



Wings (plate 41, fig. 19) moderate, hyaline; petiole of second marginal ceU 

 about one-third as long as its cell, that of second posterior cell longer than its 

 cell ; basal cross-vein distant more than its own length from the anterior cross- 

 vein; scales of the veins black and white, the outstanding ones lanceolate, the 

 black in patches as follows : six spots on costal margin, first and second small, on 

 basal fifth, third, fourth and fifth large, separated by small white spots, apical 

 spot small ; first vein with first black spots, the first small and opposite base of 

 third costal spot, the third, fourth and fifth opposite the fourth, fifth and sixth 

 costal spots and nearly as large ; second vein with the stem mostly black-scaled, 

 upper fork with a long black patch near base and a short one near apex, lower 

 fork with two short black patches ; third vein with small black spots at base and 

 near apex; fourth vein with a black patch at base of fork, two spots on upper 

 branch, one near apex of lower ; fifth vein with a black patch before fork, upper 

 branch with three small black patches, lower one with a large terminal one; 

 sixth vein with a black patch near base and another near apex; fringe dark, 

 marked with white at terminations of all the veins. Halteres whitish, with dark 

 knobs. 



Legs long and slender ; femora clothed mostly with black scales on outer side 

 and with white ones on inner side, a small black ring just beyond base, middle 

 femora with two white spots on outer side just before apex, hind femora with 

 one white spot similarly situated ; knees white ; tibiae black, a white line on inner 

 side ; tarsi black and white ; front tarsi with white apical rings on first, second, 

 and third joints; mid tarsi unmarked; hind tarsi with apical two-thirds of 

 second joint and all of third, fourth, and fifth joints white. Claw formula, 

 0.0-0.0-0.0. 



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



