A NEW SPECIES OF MOSQUITO FROM MONTANA, WITH 

 ANNOTATED LIST OF THE SPECIES KNOWN FROM 

 THE STATE 



By Harrison G. Dyar 



Custodian of Lepidoptera, United States National Museum 



The discovery of a new species of mosquito in Montana is an 

 unexpected and noteworthy event, not only because the State has 

 been so often and so well explored for its mosquito fauna but because 

 the species hitherto found have all an extended range outside of the 

 State. That the present new species is confined to Montana is hardly 

 to be expected, yet it has so far eluded intensive collecting elsewhere. 



This discovery is due to the skill of G. Allen Mail, acting for the 

 Bozeman Experiment Station under the direction of W. B. Mabee^ 

 extension entomologist. Mr. Mail formerly acted as assistant to 

 Eric Hearle, the Canadian mosquito expert, during the campaign at 

 Banff which was so satisfactorily carried out from the viewpoint 

 of the visiting tourist. 



AEDES SCHIZOPINAX, new species 



Female. — Proboscis rather long, slender, uniform, black. Palpi 

 short, about one-eighth the length of the proboscis, black. Occiput 

 with bronzy brown narrow curved scales. Mesonotum with bronzy- 

 brown scales; two broad darker brown bands are faintly relieved^ 

 lighter edged outwardly posteriorly, separated by a very narrow 

 median bare line; posteriorly the scales and hairs are lighter, with a 

 faint whitish tint. Abdomen black, with broad basal segmental sordid 

 white bands, the last two segments very largely whitish; venter 

 whitish scaled, with more or less developed median black dashes. 

 Legs black, the femora pale beneath. Wing scales hairlike, all dark. 

 A rather small species, about the size of catapJiylla. 



Male. — Palpi as long as the proboscis, the last joint slightlj^ club- 

 shaped, the penultimate joint with long hairs, black. General color- 

 ation as in the female, the vestiture of the mesonotum slightly more 

 sparse and open. Hypopygium: Sidepiece slender, uniform, about 

 three times as long as wide; apical lobe distinct, narrow, conical, with 

 rather few fine, short, curved hairs; basal lobe broadly expanded, 

 thin, dotted with tubercles bearing fine short setae; on the inner 

 angle a slightly rounded prominence bears several long setae, the 



No. 2794.— Proceedings U. S. National Museum. Vol. 75, No. 23 



40751—29 ] 



