The genus Muriculus is possible monotypic taxon with a single species - Ethiopian striped mouse
The Ethiopian striped mouse or striped-back mouse (Mus imberbis) is a species of rodent in the family Muridae. It is only found in Ethiopia. It was formerly classified in the monotypic genus Muriculus, but phylogenetic evidence supports Muriculus being a subgenus within Mus, the true mice. The Ethiopian striped mouse's natural habitats are subtropical or tropical high-altitude grassland and urban areas. It is threatened by habitat loss.