ABSTRACT. The distributional patterns found in Fennoscandian culicids are discussed. Northern circumpolar species of Aedes (Ochlerotatus), such as hexodontus Dyar and diantaeus H. D. K. are more common in Fennoscandia than previously assumed. A. (O.) pionips Dyar is for the first time recorded from Fennoscandia and A. are established in the Lapland material of pionips Dyar and pullatus (Coq.) larvae, as well as of punctodes larvae, pupae and males. Descriptions of the basal lobe of punctor, hexodontus and punctodes are given for identification of males.