The Mosquitoes of Canada 93 



CANADii^N Records. 



Aweme, Manitoba, July 28, 1916 (N. Criddle). 



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



Oxbow, Saskatchewan, May 30, 1907 (F. Knab). 



Belonge Creek, Saskatchewan, July, 1907 (V. A. Armstrong). 



Kinisteno, Saskatchewan, July 10, (J. Fletcher). 



Regina, Saskatchewan, June 9, 1907 (T. N. Willing). 

 Strassburg, Saskatchewan, June 3, 1907 (T. N. Willing). 

 Carnduff, Saskatchewan, May 28, 1901 (J. Fletcher). 

 Alameda, Saskatchewan, June 5, 1902 (J. Fletcher). 

 Olds, Saskatchewan, July 5, 1901 (J. Fletcher). 

 Rosthern, Saskatchewan, July 13, — ■ — (J. Fletcher). 

 Saskatoon, Saskatchewan, Atigust 11, 1918 (Hi G. Dyar). 

 Lochearuj, Alberta, August 5, 19 18 (H. G. Dyar). 

 Lamoral, Alberta, August 6, 1918 (H. G. Dyar). 

 Nordegg, Alberta, August 6, 19 18 (H. G. Dyar). 

 Banff, Alberta, July 8, 1918 (H. G. Dyar). 

 Kalso, British Columbia, June 13, 1903 (R. P. Currie). 



Aedes (Heteronycha) idahoensis Theobald. 



Grabhamia spencerii idahoensis Theobald, Mon. Culic, iii, 250, 1903. 



A rather small, dark gray mosquito, inhabiting open, dry country. 

 Mesonotum dark brown in the middle, a grayish stripe on each side on 

 the margin and over antescutellar space. Abdomen with grayish white 

 bands at the bases of the segments, narrowed centrally, and a few white 

 scales at the apices of the segments also; venter whitish. Legs black and 

 grayish white, the latter colour predominating beneath; femora white 

 below. Wings with the costa, first, third and fifth veins black-scaled, the 

 alternating ones white-scaled. 



In some specimen^ there is a more or less complete band of pale 

 scales down the middle of the abdomen, and these are indistinguishable 

 from spencerii. 



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

 spring pools. The adults inhabit open country, avoiding timber. The 

 males swarm after sunset over prominent objects. There are larval 

 difife:rences between idahoensis and spencerii, and they do not occupy the 

 same territory; but the adults, under exceptional circumstances, may be 

 confused. 



Distribution: Dry valleys from Colorado and Montana to Nevada 

 and Washington, probably in Canada, at least in the Okanagan Valley of 

 British Columbia. 



