South Pittsburgh and the surrounding South Hills region are home to several mosquito species that thrive in river valleys, wooded parks, marshy areas, and residential neighborhoods. While more than 50 species exist across Pennsylvania, only a few are responsible for most biting and nuisance behavior.
Black-and-white striped body, aggressive daytime biter.
Breeds in small water-filled containers: flowerpots, gutters, birdbaths, tire swings.
Very common in suburban areas like Mt. Lebanon, Baldwin, and Pleasant Hills.
Emerges after spring rains and river flooding.
Common in grassy fields, riverbanks, and wooded trails.
Bites aggressively at dusk and dawn; does not typically transmit disease.
Most active at night — particularly from dusk through early morning.
Breeds in stagnant water with organic matter such as birdbaths, storm drains, and buckets.
Main carrier of West Nile virus in Allegheny County.
