[1][2] Its presence has been documented in specific provinces of Sweden and other northern habitats, often linked to forested wetlands and areas with seasonal flooding.

[1] This species is associated with cold climates and is often found in habitats such as wetlands, bogs, and areas with abundant vegetation.

Like other members of the genus Culiseta, it likely prefers environments with standing water for larval development.

Seasonal flooding, particularly from melting snow, plays a significant role in shaping its habitat.

[3] The life cycle of Culiseta bergrothi follows the typical mosquito stages: egg, larva, pupa, and adult.