413. Colombian Black Myotis Myotis caucensis French: Murin de la Cauca / German: Kolumbien-Mausohr / Spanish: Ratonero del Cauca Other common names: Cauca River Myotis Taxonomy. Myotis caucensis J. A. Allen, 1914, “Rio Frio (altitude 3500 feet |= 1067 m]), Cauca River [Valle del Cauca], Colombia.” Subgenus Pizonyx; albescens species group. See M. nigricans. M. caucensis was revalidated as a distinct species by R. Moratelli and colleagues in 2013, which included a comprehensive discussion about nomenclature of the M. nigricans complex from western Amazonia. Monotypic. Distribution. Along the Andes of Colombia, Ecuador, and Peru, including intermontane valleys and adjacent Amazon lowlands. It might occur in N Bolivia and W Br...