"Lasiurus borealis" wani suna ne na kimiyya wanda ke nufin jinsin jemage da aka fi sani da "Arewa Yellow Bat" ko "Eastern Red Bat." Wani nau'in jemage ne na dangin Vespertilionidae kuma ana samunsa a Arewacin Amurka, kama daga kudancin Kanada zuwa gabas da tsakiyar Amurka. Kalmar "Lasiurus" ta samo asali ne daga kalmar Helenanci "lasios," wanda ke nufin "mai gashi" ko "shaggy," yana nufin fur na jemage, kuma "borealis" shine Latin don "arewa," yana nuna rarrabawar yanki. A taƙaice, "Lasiurus borealis" sunan kimiyya ne na nau'in jemagu da ake samu a Arewacin Amirka wanda aka fi sani da Arewacin Yellow Bat ko Gabashin Jar Bakin.