Distribution of Atherix ibis (Diptera, Athericidae) in Fennoscandia

Abstract

The Finnish distribution of Atherix ibis (Fabricius) was surveyed by searching for the female cones, or clusters, from the underside of bridges, by kick-net sampling (2 min) in the running water habitats and by newspaper inquires. Additional records were received from our colleagues, as well as from neighbouring countries. A. ibis was found in Finland from ten biogeographical provinces forming a clear northern and eastern distribution. The Fennoscandian distribution acquired a western extension due to recent discoveries in northern Sweden.