Intraspecific and interspecific variation in the Cryptotis Nigrescens species complex of small eared shrews (Insectivora: Soricidae), with the description of a new species from Colombia - Woodman, Neal; Timm, Robert M. (Field Museum of Natural History, 1993)
Keywords: Cryptotis -- Classification; Cryptotis -- Variation; Kleinohrspitzmaus; Systematik