JOURNAL 



, OF THE 



Jhto gorlj ^nfomoIogiraK jSoripfg. 



Vol. XIV. DECEMBER, 1906. No. 4 



Class I, HEXAPODA. 

 Order IV, DIPTERA. 



THE LARViE OF CULICID^ CLASSIFIED AS 

 INDEPENDENT ORGANISMS. 

 By Harrison G. Dyar and Frederick Knab. 



Washington, D C. 



(Plates IV-XVI.) 



"Wer A sagt muss auch B sagen." — German proverb. 



We are compelled to the conclusion that specific limits are more 

 sharply defined or at least more readily appreciable, in the larvae of 

 the Culicidae, than in the adults, although generic limitations are less 

 closely drawn. In the larvae we observe many marked modifications 

 in shape and details of the chitinized parts which appear constant for 

 the species and lend themselves readily to definition, while, in the 

 adults, the specific characters, in the females at least, seem largely 

 dependent upon comparatively indefined differences in coloration, 

 which are easily lost or obscured if the specimen is at all injured in 

 emergence or worn by flight . We are further impelled to present the 

 results of our studv of the larval forms separately for the following 

 considerations. Dr. L O. Howard has placed in the hands of the 

 senior author all the larval material collected with the aid of grants 

 from the Carnegie Institution of Washington for a monograph of the 



