Thomas's Ethiopian brush-furred rat  Thomas's Ethiopian brush-furred rat ("Lophuromys brunneus"), also called the brown brush-furred rat or the brown brush-furred mouse, is a species of brush-furred mouse from Southern Ethiopia. The holotype had a body long and a tail long. The body is a pale brown with a pale brown or clay-colored belly. "L. brunneus" is endemic to the highlands of Southern Ethiopia, from the Semien Mountains to Manno-Jimma. The type locality is around the Omo River. It was originally described as a subspecies of "Lophuromys aquilus" ("L. aquilus brunneus") in 1906 by Oldfield Thomas, from a specimen collected 13 May 1905. It was reclassified as a subspecies of "Lophuromys flavopunctatus" in 1936 as a synonym to subspecies "L. flavopunctatus zaphiri". In 2002 it was elevated to species status. The species is closely related to the Ethiopian forest brush-furred rat ("Lophuromys chrysopus"). It is believed to have interbred with "L. flavopunctatus".