MOSQUITO BIOLOGY 41 



bands at base abdominal segments, crossed longitudinally in center by 

 broad continuous line of same color. Thorax golden brown ; sides silvery 

 white. This combination of characters in no other New Jersey species ; 

 recognizable at a glance. 



DESCRIPTION OF THE ADULT 



Medium sized or rather large; beautiful brown. Body, exclusive of 

 beak, about 5.5—6 mm. (.22— .24 inch) long; beak averaging 2.5 mm. 

 Head dark brown at base, scales of outer edges gradually mix with 

 yellowish ones toward central part, bright creamy yellow between an- 

 terior part of eyes ; narrow yellow border on posterior margin of eyes. 

 Proboscis black, with well defined white central band. Palpi in female 

 blackish brown, thickly scaled; apical joint elliptical, pointed at apex, 

 usually with one or two bristles, though may not have any. In male, 

 palpi shaped like cantator, but shorter, stouter, extending beyond tip 

 of proboscis ; two apical joints narrowly white-banded at bases, broader 

 yellowish band in center of basal joint; fan-like tufts pale yellowish 

 brown. Female antennae dark brown, male brown with pale brown 

 plumes. 



Clothing on dorsum of thorax spiny, deep brown ; numerous golden 

 yellow scales often form two diffuse longitudinal rows ; lateral margins 

 blackish brown, deeply contrast with silvery white pleura. Femora and 

 tibiae ochraceous, many black scales sprinkled over surface ; knee spots 

 yellowish without scales, apices of tibiae black. Tarsi in hind legs black, 

 broadly white-banded at bases of three intermediate joints; fifth joint 

 wholly white, first narrowly white-banded at base, with distinct ochra- 

 ceous median band. Fore and mid tarsi similar to hind, except bands 

 dirty white, proportionately narrower, disappearing altogether on 

 fourth joint; ochraceous band on first tarsal joint less distinct; fifth 

 joint with some dark colored scales. In male claws of anterior and mid 

 tarsal joints unequal, the longer with median and basal tooth, the 

 shorter with median tooth slightly nearer base. Posterior claws small 

 and equal, with single tooth on each. Those of female alike on all feet, 

 being same as posterior claws of male. 



Abdomen dark brown, with broad yellowish bands at base of seg- 

 ments, becoming slightly wider laterally; longitudinal stripe entire 

 length of abdomen across bands in center, dividing body color into 

 blocks. On two apical segments white spots laterally near base. Bands 

 and stripe generally well defined, but specimens common where very 

 much diffused, apical segments being entirely yellow and blocks appear- 

 ing as irregular spots. Dirty yellow or grayish beneath. 



