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Article
Published: 2018-01-31

A new species of small-eared shrew of the genus Cryptotis (Mammalia, Eulipotyphla, Soricidae) from the northernmost Peruvian Andes

Instituto de Ciencias de la Naturaleza, Territorio y Energías Renovables. Pontificia Universidad Católica del Perú, Av. Universitaria 1801, San Miguel, Lima, Perú Colección Científica—Museo de Historia Natural de la Universidad Nacional San Agustín, Av. Alcides Carrión s/n, Arequipa, Perú
Colección Científica—Museo de Historia Natural de la Universidad Nacional San Agustín, Av. Alcides Carrión s/n, Arequipa, Perú Programa de Magister en Ciencias, Mención en Zoología, Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción, Casilla 160-C, Concepción, Chile
Colección Científica—Museo de Historia Natural de la Universidad Nacional San Agustín, Av. Alcides Carrión s/n, Arequipa, Perú
Programa de Magister en Ciencias, Mención en Zoología, Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción, Casilla 160-C, Concepción, Chile
Department of Ecology and Evolutionary Biology, University of California, 610 Charles E. Young Drive South, Los Angeles, California 90095-1601, United States of America
Museo de Zoología de la Pontificia Universidad Católica del Ecuador, Av. 12 de Octubre 1076 y Roca, Quito, Ecuador
Instituto de Ecología, Universidad Nacional Autónoma de México, Apartado Postal 70-275, México D.F. 04510, México
Mammalia Soricomorpha new species Andean páramo Neotropical shrews Peruvian mammals

Abstract

The northernmost Peruvian Andes, a unique biogeographic region characterized by the confluence of multiple distinct ecosystems (i.e. Amazon basin, Pacific rainforest, the Sechura Desert, the northern and central Andes), is the southernmost geographic range limit of the South American shrews representing the genus Cryptotis. In the northernmost Peruvian Andes, two poorly known species have traditionally been reported (C. peruviensis and C. equatoris). Our study, based on molecular and morphologic traits, confirms the presence of C. peruviensis but also the occurrence of C. montivaga, based on specimens erroneously assigned to C. equatoris. Moreover, a new species of Cryptotis from the páramo and montane forests of the Tabaconas Namballe National Sanctuary near the Ecuadorian border is also described. It is a member of the thomasi group and is distinguished from other South American shrews by a unique set of morphological characters, including large body size, comparatively short tail, simple ectoloph of M3, and large PM4 post protocrista.

 

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