Nemoura arctica Esben-Petersen 1910

This arctic species is common in northern Fennoscandia (Lillehammer 1985), and also reported as widely distributed in arctic and subarctic North America (e.g. Walters et al. 2009). The ethanol collection includes ten samples from Finnmark and one from Abisko in northern Sweden. The slide collection includes mounts of wings, male genitalia (Fig. 1) and nymphal pronota.