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The bumble bee  Bombus polaris  (Curtis 1835) is known from the northernmost region of Greenland. But how it can survive there, where in terms of geographic origin it came from, and which species in addition to  B. pyrrhopygus  (Friese 1902) genetically it is most closely related to are insufficiently answered questions that have motivated us to carry out this study. On the basis of a molecular analysis of the cytochrome oxidase I gene of a  B. (Alpinobombus) polaris  from North Greenland (82° 48′ N; 42° 14′ W), we conclude that the female specimen we analysed was most closely related to the Canadian populations of  B. polaris . Geographic proximity, occurrence of  B. polaris  on Ellesmere Island and wind direction are likely factors that have aided  B. polaris  to establish itself in northern and eastern Greenland. The presence of five haplotypes in the studied sequences from Greenland indicates a moderately high level of genetic diversity of  B. polaris  in Greenland, reflecting the successful adaptation of  B. polaris  populations. In the broader context of entomological life in the high Arctic, our results on  B. polaris  allow us to conclude that the survival of pollinating species in the high Arctic under the changing climate scenario depends not only on the weather but also on an individual’s opportunity to continue to locate suitable food sources, i.e. pollen and nectar in the case of  B. polaris . This aspect, briefly touched upon in this study, is of relevance not just to  B. polaris , but the Arctic entomofauna generally.

Molecular characteristics of Bombus (Alpinobombus) polaris from North Greenland with comments on its general biology and phylogeography