Resumen
Como parte de unn trabajo a corto plazo para recolectar musarañas durante octubre de 2006, nuestro equipo de trabajo de campo registró la coexistencia de cuatro especies de musarañas: 14 individuos de machetes Cryptotis goldmani (10♀ - 4♂), 14 de C. phillipsii (6♀ - 8♂), siete de Sorex salvini oaxacae (7♀) y tres de S. veraepacis mutabilis (2♀ - 1♂). Todos estos cuatro taxones no son especies hermanas, incluso cuando algunos de ellos son congenéricos.
Citas
BRANNON, M. P. 2000. Niche relationships of two syntopic species of shrews, Sorex fumeus and S. cinereus, in the Southern Appalachian Mountains. Journal of Mammalogy 81:1053-1061.
CARRAWAY, L. 2007. Shrews (Eulypotyphla: Soricidae) of Mexico. Monographs of the Western North American Naturalist 3:1-91.
CHURCHFIELD, S. & L. RYCHLIK. 2006. Diets and coexistence in Neomys and Sorex shrews in Białowieża forest, eastern Poland. Journal of Zoology 269:381-390.
ESTEVA, M., et al. 2010. Molecular phylogeny of long-tailed shrews (genus Sorex) from México and Guatemala. Zootaxa 2615:47-65.
GONZÁLEZ-RUIZ, N., et al. 2014. Mamíferos del bosque mesófilo de montaña en México. Pp. 305-326, in Bosques mesófilos de montaña de México: diversidad, ecología y manejo (Gual-Díaz, M and A Rendón-Correa, comps.), Comisión Nacional para el Conocimiento y Uso de la Biodiversidad. México.
GUEVARA, L. & F. A. CERVANTES. 2014. Molecular systematics of small-eared shrews (Soricomorpha, Mammalia) within Cryptotis mexicanus species group from Mesoamerica. Acta Theriologica 59:233-242.
GUEVARA. L., et al. 2015. Riqueza, distribución y conservación de los topos y las musarañas (Mammalia, Eulipotyphla) de México. Therya 6:43-68.
HANSKI, I. 1992. Insectivorous mammals. Pp. 163-187, in Natural enemies: the population biology of predators, parasites and diseases. (Crawley MJ, ed.), Blackwell Scientific Press, Oxford, UK.
HUTTERER R. 1985. Anatomical adaptations of shrews. Mammal Review 15:43-55.
KIRKLAND Jr., G. L. 1991. Competition and coexistence in shrews (Insectivora: Soricidae). Pp. 15-22, in: The biology of the Soricidae (Findley JS and TL Yates, eds.), Special Publication of the Museum of Southwestern Biology, University of New Mexico, Albuquerque.
LUNA‐VEGA, I. & S. MAGALLÓN. 2010. Phylogenetic composition of angiosperm diversity in the cloud forests of Mexico. Biotropica 42:444-454.
MUSSER, G. G. 1964. Notes on geographic distribution, habitat, and taxonomy of some Mexican mammals. Occasional Papers of the Museum of Zoology, University of Michigan 636:1-22.
RYCHLIK, L. 2000. Habitat preferences of four sympatric species of shrews. Acta Theriologica 45:173-190.
SÁNCHEZ-CORDERO, V. & L. GUEVARA. 2016. Modelado de la distribución potencial de las musarañas (Mammalia, Soricidae). Universidad Nacional Autónoma de México. Instituto de Biología. Bases de datos SNIB-CONABIO, proyecto No. JM044. México, D.F.
SCHALDACH, Jr., W. J. 1966. New forms of mammals from Southern Oaxaca, Mexico, with notes on some mammals of the coastal range. Saugetierkundliche Mitteilungen 4:286-297.
WOODMAN, N. & R. M. TIMM. 2000. Taxonomy and evolutionary relationships of Phillips’ small -eared shrew, Cryptotis phillipsii (Schaldach, 1966), from Oaxaca, Mexico (Mammalia: Insectivora: Soricidae). Proceedings of the Biological Society of Washington 113:339-355.
WOODMAN, N. & J.J.P. MORGAN. 2005. Skeletal morphology of the forefoot in shrews (Mammalia: Soricidae) of the genus Cryptotis, as revealed by digital X-rays. Journal of Morphology 266:60-73.
WOODMAN, N, & S. A. GAFFNEY. 2014. Can they dig it? Functional morphology and semifossoriality among small‐eared shrews, genu s Cryptotis (Mammalia, Soricidae). Journal of Morphology 275:745-759.
WOODMAN, N., et al. 2012. Distributional records of shrews (Mammalia, Soricomorpha, Soricidae) from Northern Central America with the first record of Sorex from Honduras. Annals of Carnegie Museum 80:207-237.

