The Mosquitoes of New Jersey 25 



Eye and Hand-lens Key to the Adult of the More Common Species 



A. Palpi at least three-fourths the length of the beak. 



I. Wing mottled bearing one large rather distinct white spot. 



Anopheles punctipennis. (p. 96) 

 II. Wing without white spot but with four fairly distinct blackish spots ; 

 the spots due to aggregation of scales. 



Anopheles quadriniaculatus. (p. 100) 



III. Wing without any of the spots mentioned but with decidedly blackish 



front edge; this appearance due to aggregation of scales along front 



edge Anopheles crucians, (p. 95) 



B. Palpi scarcely more than one-fourth the length of the beak. 



I. Feet without white or yellowish bands. 



1. Front edge of abdominal segments bordered by white bands. 



Culex pipiens. (p. 82) 

 Culex saliyiarius. (p. 41) 



2. Back edge of abdominal segment bordered by white band which is 

 narrow and sometimes broken Culex terrUans. (p. IS4) 



II. Feet white or yellowish banded. 



1. Beak with white circular band. 



a. Edges of white band not sharp ; rough scaly species with much 

 white on legs and feet Mansonia perturbans. (p. 107) 



b. Edges of white band sharp. 



(i) Yellowish white band running lengthwise the upper surface 

 of the abdomen ; no white bands or sharply defined spots on 

 the hind femur or tibia Aedes sollicitans. (p. 31) 



(2) No lengthwise median band; no spots on the hind femur 

 or tibia ; two white spots, one on each side of the dorsal 

 aspect of each of the two abdominal segments before the 

 last Aedes taeniorhynchus. (p. 35) 



2. Beak without circular band. 



a. Abdominal bands white and rather sharp edges ; abdominal bands 

 so strongly notched from the rear as to appear almost divided ; 

 tarsal bands not occurring on both ends of the same segment. 



Aedes sylvestris. (p. 104) 



b. Abdominal bands not so notched ; white bands on both ends of the 

 hind tarsal segments, the joint between the femur and the first 

 tarsal segment being completely white and thus giving the char- 

 acteristic "white knees" of this species. 



Aedes canadensis, (p. 112) 



c. Abdominal and tarsal bands yellowish, no sharp notching in 

 former, tarsal bands on basal ends of segments only. 



Aedes cantator. (p. 36) 



Aedes stimulans. (p. 115) 



Aedes abfitchii. (p. 118) 



III. Very large ; twice as long from head to tail as any other common 



species ; legs conspicuously fringed with long hairs. 



Psorophora ciliata. (p. 120) 



