538 A Monograph of Culicidae. 



Aedes fuscus. Osten Sacken (1877). 



Bull. U.S. Geol. Surv. III., p. 191 (1877), Osten Sacken ; Mono. Culicid. II., 

 p. 226, pi. XXXII., fig. 126; III., p. 286 (1903), Theobald; Journ. 

 N. Y. Ent. Soc. X., p. 197, pi. XVII., fig. 1 (1902), Dyar ; Mosq. 

 N. Jersey, p. 332 (1905), Smith. 



Additional localities.— New York State (E. P. Felt); New 

 Jersey (Mr. Grossbeck) ; New Haven and Southampton, Con- 

 necticut. 



Observations. — A number of this species have been sent me, 

 and from the $ 's fresh preparations have been made ; the $ palp 



Fig. 243. 

 Labial plate of Aedes fuscus. Osten Sacken. (After Felt.) 



has only three segments, the apical one very small and nipple- 

 like j the appearance at times is that of a 5-jointed palp, but the 

 basal constrictions are not complete. The fore and mid ungues 

 are unequal, the larger with a prominent tooth, the hind equal 

 and both uniserrate. 



In both sexes the banding of the abdomen is apparently 

 absent ; I fancy this is due to shrinkage when dead. 



Nothing has been learnt with regard to the habits of the 

 adults. In Yol. III. of this work (p. 286) I said that the larvae 

 had been found in New Jersey in the pitchers of Pitcher plants 

 (Sarracenia) by Mr. Brakeley. This evidently referred to Wyc- 

 mnyia (then called Aedes) smithii. 



The larvae of Aedes fuscus occur in pools with Culex aurifer, 

 etc. They are found in April and May in New Jersey (J. R 

 Smith), and the adults in May. It is assumed the eggs are laid 

 in mud and winter as such, as larvae are found in pools in spring 

 which have been dried up all the winter. 



The larva measures 7 to 8 mm. in length, and resembles in 

 general appearance that of canadensis and sylvestris ; colour grey 



