126 THE MOSQUITOES OF NEW JERSEY 



three segments. Patches on sides of thorax larger and whiter than in 

 any other species. 



DESCRIPTION OF THE ADULT 



This mosquito varies considerably in size, ranging from 4-6 mm. 

 (.16-.24 inch) long, excluding proboscis, which is 2-2.5 mm. long. 

 Occiput almost entirely covered with grayish white scales ; proboscis 

 black, without marks or rings ; palpi in female normal, dark brown or 

 blackish, with terminal joint very small, bluntly pointed at apex and 

 flat at base. In male palpi black, slightly dilated toward apex, with 

 steel blue sheen; basal joint long and slender, central short, and to- 

 gether they reach tip of proboscis. Terminal joint very short, only a 

 little longer than half length of central. Fan-like tufts small and scant. 

 Antennae of both sexes brown, with plumes of male paler. 



Fig. XL. Adult of tree-hole mosquito. Aedes triseriatus Say. (After John B. 

 Smith.) 1, female adult; 2, anterior claws of same; 3, anterior, 4, middle 

 and 5, posterior claws of male (all enlarged). 



