106 



INSECUTOR INSCITI^ MENSTRUUS 



prodotes Dyar 

 Group curriei 



campestris D. & K. 



curriei Coq. 



albifasciatus Macq. 

 Group stimulans 



excrucians Walk. 



mutatus Dyar 



fletcheri Coq. 



mercurator Dyar 



fitchii F. & Y. 



palustris Dyar 



grossbccki D. & K. 

 Group thibaulti 



thibaulti D. & K. 

 Group trichurus 



trichurus Dyar 



poliochros Dyar* 

 Group innuitus 



innuitus D. & K. 



cataphylla Dyar 



callithotrys Dyar 

 canadensis Theob. 



aloponotum Dyar* 

 increpitus Dyar 

 stimulans Walk. 

 cantator Coq. 

 mimesis Dyar 

 riparius D. & K. 

 squamiger Coq. 



cinereoborealis F. & Y 



nearcticus Dyar 



^ Male unexamined and position of species not verified. 



It is intended to treat of these groups separately as oppor- 

 tunity serves. 



THE AMERICAN AEDES OF THE STIMULANS 

 GROUP 



(Diptera, Culicidce) 

 By HARRISON G. DYAR 



The species of this group inhabit temperate North America, 

 Europe, and Asia. As far as this holarctic region is concerned, 

 they may be defined as Aides of the subgenus Heteronycha 

 with white rings at the bases (only) of the tarsal joints. This 

 marking is repeated in other subgenera of A'edes and in Hete- 

 ronycha also in Australia ; but for the region in question it is 

 distinctive. 



The species are not separable in all cases on the coloration 

 of the female adults ; but the male hypopygium is character- 



