Ochlerotatus fitchii

Ochlerotatus fitchii is the largest biting mosquito commonly encountered in Teton County.  This species is widely distributed thoughout the county, and its larvae maybe found in a variety of habitats from small, wooded pools to larger, open marshes.  This species is typically limited to one generation per year, but because of its longevity and wide distribution, it may be encountered throughout most of the summer season.  Females are aggressive biters and may become a local nuisance when nearby larval habitat is abundant.  Image from Carpenter & LaCasse, 1955.