996 MOSQUITOES OF NOETH AMEEICA 



Dbsceiption of Femaub, Male, and Labva of Anopheles amcimacota: 



Female. — Proboscis moderate, straight, uniform; labellse long, lanceolate, 

 with fine outstanding sets ; vestiture black, somewhat roughened at base. Palpi 

 as long as the proboscis, uniform, roughened by long erect spatulate scales, 

 black, narrow white rings at bases of last two joints and middle of long joint, 

 a group of light hairs at tip. Antenna filiform, the joints subequal, rather 

 short, blackish, densely pilose; hairs of whorls sparse, black, short; tori rather 

 small, subspherical, with an apical cup-shaped excavation, piceous, with a 

 luteous rim and a patch of ovate yellowish-white scales. Clypeus broad, 

 rounded triangular, dull brown, pruinose, nude. Eyes narrowly separated on 

 the vertex, black. Occiput with a median groove, piceous, broadly and densely 

 clothed with erect truncate black scales, a few white ones in the center of the 

 vertex; a group of long pale hairs projecting forward on the vertex and be- 

 tween the eyes ; hairs along eye-margins long and black. 



Prothoracic lobes small, lateral. Mesonotum narrow, elongate, grayish prui- 

 nose, irregularly mottled with deep brown specks, two indistinct, narrow, im- 

 pressed, coneolorous longitudinal stripes on anterior two-thirds of disk, a pair 

 of broader bare stripes well towards the sides on posterior third, a large sub- 

 quadrate black spot on each side near lateral angle and one basally on ante- 

 seutellar space ; dorsal vestiture of fine pale golden hairs ia longitudinal series 

 and arising from black punctures, a few narrow erect white scales at anterior 

 margin. Scutellum collar-like, brownish, gray pruinose, with a large black spot 

 in middle continuous with that on antescutellar space, with pale hairs and 

 coarser brown marginal bristles. Postnotum elliptical, prominent, dark brown, 

 nude. Pleurae and coxse grey pruinose, with dark brown bare spots, fine yellow- 

 ish hairs, and some small patches of ovate whitish scales. 



Abdomen subcylindrical, depressed, tnmcate at tip, luteous-brown, the seg- 

 ments darker on the disk, clothed dorsally rather evenly with numerous fine 

 pale yellow hairs, a conspicuous tuft of erect spatulate black scales on posterior 

 angles of each segment; venter with a few triangular white scales and erect 

 black scales at apices of segments forming broad apical bands. 



Wings (plate 41, figs. 4, 5) moderate, hyaline, three brown spots on the eosta 

 and smaller ones about the cross-veins ; petiole of second marginal cell over half 

 as long as its cell, that of second posterior ceU longer than its cell ; basal cross- 

 vein distant about its own length from anterior cross-vein ; outstanding scales of 

 veins ovate, black and yellowish-white, with black scales in spots as follows : three 

 very large ones on the costa involving subcostal, first and second veins, the 

 membrane strongly infuscated beneath the black scales, a fourth large spot 

 apical, involving apices of first and second veins; on the costa preceding and 

 between the large spots are small spots ; several little spots on first vein between 

 the large spots ; four small spots on third vein, the largest one basal, two beyond 

 middle and a minute apical one ; fourth vein black with several white spots on 

 the stem, two white ones on upper fork and one long one on lower ; fifth vein 

 black scaled, upper fork with three little white spots, lower with one spot near 

 tip; sixth vein black sealed, with five white spots; fringe dusky, with a large 

 yellow spot at tip of wing and small ones at apices of some of the veins. Halteres 

 pale at base, white scaled, disk of knob black. 



Legs long and slender, black-scaled with numerous yellowish white spots and 

 rings, about eight on the femora, about ten on the tibiae ; hind tarsi with seven 

 or more small yellowish white spots on the first joint, base, apex, and a middle 

 spot white on second and third joints, fourth and fifth joints narrowly white at 

 base and apex ; fore tarsi with three white spots on first joint, second, third, and 

 fourth joints white at base, the second also with a white ring at middle, fifth joint 

 pale at tip ; mid tarsi without marks. Claw formula, 0.0-0.0-0.0. 



Length : Body about 4.5 mm. ; wing 4 mm. 



