108 THE MOSQUITOES OF NEW JERSEY 



Thorax as long as broad, only sliglitly angulated at sides, lateral 

 tufts moderately long ; two very small tufts on anterior margin. 



Abdominal segments from one to seven are oblong or subquadrate, 

 with three or more hairs to lateral tuft in first and second segments, 

 and two hairs to tuft in following segments. Eighth segment has from 

 twenty-four to thirty scales to each of lateral patches ; single scales 

 long, with three spines at apex and very fine ones along sides. Anal 

 siphon pale yellow, slightly darker near tip ; about five times as long 

 as its width at base and evenly tapered toward apex. Spines, from 

 fifteen to twenty-two in each row, extend almost to middle; vary in 

 size, and in number and length of teeth ; short ones always toward base ; 

 apical two longest and separated from rest and from each other. Si- 

 phonal tufts at the end of the row have but three or four long hairs. 

 Ninth segment slightly longer than broad with usual dorsal and ventral 

 tufts. The anal gills are stout and moderate in length without visible 

 trachea. 



Larva differs obviously from that of stimulans in antennal structure, 

 in form and arrangement of scales on eighth segment and in form and 

 armature of anal siphon. 



HABITS OF THE EARLY STAGES 



Four larvae, rather well grown, were collected April 25, in the 

 swampy woodland at Livingston Park, with Aedes canadensis and 

 Corethra cinctipes. They were at once recognized as distinct and sepa- 

 rated from the others ; but they did not do well ; two died and on May 7 

 everything that remained was put in alcohol. April 27, another collec- 

 tion of twenty specimens was made and May 2 as many more were 

 brought in. The larva was not easily found, occurring only in deep 

 pools with a layer of leaves on the bottom, among which they feed and 

 hide. Pupation began on May 4 and on May 7 there were twelve pupae ; 

 but then a fungus attacked the remaining larvae and all were put in 

 alcohol. The first adult emerged May 8 and all were out May 12, giving 

 a pupal period of from four to five days. 



There was no later appearance of larvae, and it is probable that 

 there is one brood only, the winter being passed in the egg stage. 



[According to Howard, Dyar, and Knab (14) the larvae appear in 

 pools in the early spring where they hatch from overwintering eggs. 

 There is only one brood. The larvae have a slow development and are 

 sometimes found in pools of a permanent nature. The adults infest the 

 woodlands during the fore part of summer and rarely, if ever, leave the 

 woods. They bite freely even after eggs have been laid.] 



