SYNOPTIC TABLES OF THE NORTH AMERICAN MOSQUITOES. 



By D. W. CoCiVILLETT. 



I. — Generic Synopsis. 



The following taljle contains all the genera of the long-beaked mos- 

 quitoes known to occur in North America. The males are readily 

 recognized by the antenna? being densely covered with long hairs; in 

 the females the hairs of the antenna? are short and very sparse. 



1. Palpi in the male at least nearly as long as the proboscis, in the female less than 



one-half as long 2. 



Palpi in both sexes at least almost as long as the prol^oseis Anopheles. 



Palpi in both sexes less than one-half as long as the i^roboscis Aedes. 



2. Proboscis straight or nearly so, colors of body brown and yellowish 3. 



Proboscis strongly cnrving downward toward the tip, colors blnish or greenish. 



Megarhmm. 



3. Legs bearing many nearly erect scales Psorophnra. 



Legs destitute of i"uch scales Ciilex. 



II. — Genus Anopheles. 



(a) RECOGNIZED SPECIES. 



1. "With a yellowish white spot near three-fourths of the length of the front margin 



of the wing: scales of last vein white, those at each end black. . pnnctipe»nis Say. 

 Without such a spot 2. 



2. Scales of last vein wholly black, palpi wholly l)lack quadrimarulaius Say. 



Scales of last vein white, marked with three black sjiots, palpi marked with white 



at bases of last four joints crucians Wied. 



(h) UNRECOGNIZED SPECIES. 



The following s])ecies which have been credited to our country bave 

 not been recognized with certainty; some of them proba1)]y do not 

 belong to the present genus, while a few were evidently founded on 

 badly rul^bed .specimens in which the distinctive characters were 

 therefore^ wanting : 



annul i) nan us v. d. Wulp. I strongly suspect that this does not belong to the pres- 

 ent genus; the description applies fairly well to the male of Culex consohrlnus Desv. 

 ferruginosus Wied. This author proposes this name for the species pre\'iously 

 described l)y Say under the name of Culex quinquefasciatus, but the description which 

 he gives differs so decidedly from the one published by Say as to give the impres- 

 sion that it is founded on a different species. I strongly suspect that the type of 

 ferruginosus is a rubl)ed example of Anopheles crucians, which was described from the 

 same locality. Say's description of his Culex quinquefasciatus agrees very well with 

 the species which I have identified as Culex impiger Walker. 



maculijjennis ]\Ieigen. I strongly suspect that this European form is identical with 

 our Ano2:)heli'i< quadrimaculatus Say, but this point can not be settled definitely at 

 present, owing to the lack of any European si^ecimens for comparison with ours. 



nigripes Staeger. This European species should be readily recognized by its 

 unspotted wings. 



albimanus Wied. Differs from our other species by the snow-white apices of the 

 tarsi. 



Ano})helex pirlus Loew I think should be placed as a synonym of A. crucians Wied. 



