Dicrostonyx Hudsonius, commonly known as the Hudson Bay lemming, has several synonyms that can be used to refer to this small rodent species. Some of the most common synonyms of this species include Lemmus hudsonius, Phenacomys hudsonius, and Myopus hudsonius. These various synonyms are often used interchangeably by scientists and researchers who study this species, and they all refer to the same small mammal found in the Arctic and Subarctic regions of North America. Despite the various scientific names associated with this species, the Hudson Bay lemming remains one of the most important components of the arctic food web, providing a critical food source for predators such as arctic foxes and snowy owls.