| tamiasciurus | (n) American red squirrels, Syn. genus Tamiasciurus |
| american red squirrel | (n) of northern United States and Canada, Syn. Sciurus hudsonicus, spruce squirrel, Tamiasciurus hudsonicus, red squirrel |
| chickeree | (n) far western United States counterpart of the red squirrel, Syn. Douglas squirrel, Tamiasciurus douglasi |