The Mosquitoes of Canada 73 



This mosquito is rarely met with except by breeding from pitcher- 

 plant leaves. It has not been recorded as biting; but as many of the 

 tropical species attack warm-blooded animals, this may be found to do so. 



Distribution : Canada to Alabama, probably coextensive with the 

 range of the host plant Sarracenia purpurea. 



Canadian Records. 



Guelph, Ontario (T. D. Jarvis, Can. Ent., xxxviii, 7, 1906). 

 Carlsbad Springs, Ontario (A. Gibson). 

 Goderich, Ontario, January, 19 14 (C. V. Lawson). 



Tribe Culicini. 



This tribe includes the bulk of the mosquitoes, anJd all of those of 

 typically northern distribution. Only a few of the lowest members live 

 in water in plant tissues, such as tree-holes; most of the species inhabit 

 ground puddles. The species and genera are variously differentiated. 

 A'edes inhabits temporary puddles, especially water left from the melted 

 snow in spring, an^ these species have in general but a single annual 

 generation. Culex and Culiseta inhabit pools of a generally permanent 

 character, and overwinter as adults . A nopheles larvae are surface-feeders , 

 and consequently the character of the water makes less difference in 

 them. They have been found in all sorts of water, even in running 

 streams, but the different species are variously restricted. 



Genus Culex Linnaeus. 



This genus is in general of southern distribution, and but few species 

 occur in Canada. The larvae inhabit water of a permanent nature, 

 some species taking kindly to water in artificial containers, such as water- 

 barrels and sewer-traps. Such species are liable to be abju^dant and 

 troublesome in cities. 



The subgenera, define<d on the male genitalia, are as follows: 



1. Harpes few toothed. . . .Subgenus Climacura Howard, Dyar & Knab 

 Harpes with a crown of spines 2 



2. Secon4 uncal plate present (four plates) . .Subgenus Culex Linnaeus 

 Second uncal plate absent (three plates) . . Subgenus Neoculex Dyar 



Key to the Canadian Species of Culex. 



I. Tarsi ringed with white at both ends of the joints, .tarsalis Coquillett 

 Tarsi entirely dark 2 



