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Type: Article
Published: 2009-12-22
Page range: 245–261
Abstract views: 104
PDF downloaded: 0

The subgenus Tipula (Pterelachisus) in Finland (Diptera: Tipulidae)—species and biogeographic analysis

Samettijalka 2 A 6, FIN-40640 Jyväskylä, Finland
Craneflies boreal zone species richness red-listed species National Responsibility Species


A total of 19 Finnish species of the subgenus Tipula (Pterelachisus) are presented. The highest species richnesses are observed in the southern, south eastern and eastern parts of the country and the lowest number of species are found in south western, western and northernmost Finland. This pattern is probably caused by the climate and the eastern Palaearctic origin of several species, but also by differences in forestry history between eastern and western Finland. 16 % of the species are red-listed (NT-VU); these species are confined to primeval heath forests or herb-rich forests and have small distribution areas. 42 % of the species are generally poorly known (NE-DD) and 42 % are rather wide-spread and common (LC). Furthermore, 26 % of the species are National Responsibility Species of Finland; these are boreal species, being absent or rare in Central Europe. The distribution of species in Finland and their area of occupancy is positively correlated. There is also a positive relation between the global range of any species and the extent of its regional occurrence in Finland.