Pelophila borealis (Paykull). This pelophiline is one of the 97 species-group taxa which are Holarctic and found naturally in both the Palaearctic and Nearctic Regions. Most of these species are confined to the arctic, subarctic or boreal regions but a few are found mainly in the temperate regions such as Dyschirius politus. Most biogeographers agree that these species have spread between the two continents through Beringia during the Quaternary period.
Yves Bousquet
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Bousquet Y (2012) Catalogue of Geadephaga (Coleoptera: Adephaga) of America, north of Mexico. ZooKeys 245: 1-1722. <a href="//doi.org/10.3897/zookeys.245.3416" class="extiw" title="doi:10.3897/zookeys.245.3416">doi:10.3897/zookeys.245.3416</a>