The Mosquitoes of Canada 109 



The winter is passed in the egg stage, the larvae developing in early- 

 spring water, woods pools and marshes. There is but one annual genera- 

 tion, though the adults last most of the summer, flying in the woods. 

 The species does not enter houses. 



Distribution: Northern forests from New Jersey to Canada, west- 

 ward to British Columbia, Yukon Valley and Alaska. 



Canadian Records. 



Ottawa, Ontario, June i, 1900 (J. Fletcher). 

 Trenton, Ontario, May 24, 1900 (J. Fletcher). 

 White River, Ontario, June 25, 1907 (F. Knab). 

 Dryden, Ontario, June 27, 19 18 (H. G. Dyar). 

 Winnipeg, Manitoba, June 22, 1907 (F. Knab). 

 Red Deer, Alberta, July 29, 1918 (H. G. Dyar). 

 Banfl^, Alberta, July 7, 1918 (Hi G. Dyar). 

 Whitehorse, Yukon Territory, July 2, 19 19 (H. G. Dyar). 



Aedes (Heteronycha) fitchii Felt & Young. 



Culex fitchii Felt & Young, Science, n.s., xx, 312, 1904. 

 Aedes palustr is Dyar, Ins. Ins. Mens., iv, 89, 1916. 

 Aedes mimesis Dyar, Ins. Ins. Mens., v, 116, 1917. 



A rather large brown mosquito with ringed legs. Mesonotum yellow- 

 ish gray on the sides, a broad reddish brown or dark brown band in the 

 middle, joining the short posterior stripes. Abdomen blackish, with 

 basal segmental white bands, widening on the sides, and some white 

 scales on the apices of the segments also; venter whitish, with a row of 

 black dashes on middle line. Legs black, with many white scales inter- 

 mixed on femora and tibiae, the tarsi with white rin-gs at the bases of the 

 joints, broad on the hind pair. Wings with black scales, with more or less 

 white ones intermixed, especially along costal region. 



The adult females are not certainly distinguishable from excrucians 

 and stimulans. This species is commonly smaller than these and often 

 has many white scales on the wings; the mesonotum is often clear gray 

 on the sides, but none of the characters hold. The species is less closely 

 addicted to forests than excrucians, being common on the prairies where 

 some cover exists, and in the half-open country of the Yukon region. 

 The males swarm as with excrucians and stimulans, there being no differ- 

 ences in these habits between the three. 



The winter is passed in the egg state, the larvae developing in early 

 spring water, often with excrucians. The adults fly until late in the 

 season, not entering houses. 



