Microutus richardsoni nau'in rodent ne da aka fi sani da "Richardson's vole." Karami ce, dabbar dabbar ciyawa ce wacce ke cikin dangin Cricetidae kuma ana samunta a yammacin Arewacin Amurka. Sunan "Microutus" ya fito daga kalmomin Helenanci "micros," ma'ana karami, da "otus," ma'ana kunne, yana nufin ƙananan kunnuwa. An ba wa jinsin sunan sunan Sir John Richardson, wani likitan sojan ruwa dan kasar Scotland kuma masanin halitta wanda ya taka rawa wajen kwatanta nau'in dabbobi masu shayarwa da dama a Arewacin Amurka.