[Multiyear ecologic faunistic research on Culicidae in Dnepropetrovsk Province. 1]

Hydrologic characteristic of Dnepropetrovsk, which is situated in drought steppe zone, is presented. Comparative study of bloodsucking mosquito fauna in 4 regions of the town with different urbanization degree was carried out. The fauna in a town differs considerably from natural biotopes. Penetration of forest-steppe and forest mosquitoes into town is explained by the features of the microclimate and hydrologic status of the town. Active season of some species lasts longer in town conditions. Higher density of mosquito larvae is marked in town ponds. The poorest fauna is in regions with dense construction (1st degree of urbanization as stated by WHO), where Culex pipiens molestus dominate. In a region with park-forest plantations (2nd degree of urbanization) Aedes cantans, usual for forest zone, dominate.