INSECUTOR INSCITI^ MENSTRUUS 157 



THE AMERICAN AEDES OF THE SERRATUS • 

 GROUP 



(Diptera, Ciilicidae) 

 By HARRISON G. DYAR 



This is the last of the larger groups into which I divided 

 Acdes, subgenus Ochlerotatus (Ins. Ins. Mens., viii, 104, 1930). 

 The others have been recently gone over in the pages of this 

 magazine. In regard to the nomenclature originally adopted, 

 two changes in the subgeneric names seem indicated, namely 

 Ochlerotatus for Heteronycha (see Ins. Ins. Mens., ix, 150, 

 1921) and Culicelsa for Taeniorhynchus. The latter change 

 rests upon the question as to whether an author's type is to be 

 considered the species he states it to be, or the species actually 

 before him. I adopted the former view, but the consensus of 

 opinion seems to be in favor of the latter. No authoritative 

 ruling could be obtained on the subject. Lynch described the 

 genus Taeniorhynchus, founding it on a species which he called 

 taeniorhynchus of Wiedemann, but which was really Walker's 

 titillans. If taeniorhynchus Wied. be considered the type of 

 Taeniorhynchus Lynch, as stated by Lynch, then Taeniorhyn- 

 chus becomes a subgenus of Acdes as used by me; but if 

 titillans Walker be considered the type of Taeniorhynchus 

 Lynch, which was the species before Lynch at the time, then 

 Taeniorhynchus replaces Mansonia Blanchard, a distinct genus. 

 This latter view is adopted by Theobald, Edwards and others, 

 and to avoid confusing diversities in nomenclature, it may be 

 best to follow suit in the present instance. 



The species of Oclilerotatiis of the serraius group may be 

 separated by the characters of the male hypopygium as below. 

 Two species which I suppose to belong to the group are un- 

 known in the male. These are mathisi Neveu-Lemaire and 

 knabi Coquillett, listed in their probable position. 



Table of Species 



Basal lobe of side piece rounded and bulbous. 



Filament of claspette broadly blade-shaped fuhnis Wiedemann 



