Ochlerotatus spencerii

Ochlerotatus spencerii is found at lower elevations thoughout much of Teton County.  This species has multiple generations through the summer, and larvae are found in many of the habitat types commonly occupied by Aedes vexans and Aedes cinereus.  Females are aggressive biters in the twilight hours and may be a serious nuisance in some areas.  Image from Carpenter & LaCasse, 1955.