Review of the distribution of Somatochlora sahlbergi (Odonata: Corduliidae)

Based on data collected from literature, museum collections, national databases and personal communications, an up-to-date map of the worldwide distribution of Somatochlora sahlbergi is presented. A new hypothesis is presented indicating that occurrences are at least regionally correlated with palsa mires. Two examples of larval habitats in Europe are illustrated and described, including the first observation of reproduction in Norway and the first record of co-occurrence with Zygoptera in Europe. The exuvia of S. sahlbergi is illustrated and distinguishing features briefly discussed. 2 Distribution of Somatochlora sahlbergi