Soricidae Author Russell A. Mittermeier Author Don E. Wilson text 2018 2018-07-31 Lynx Edicions Barcelona Handbook of the Mammals of the World – Volume 8 Insectivores, Sloths and Colugos 332 551 book chapter 102847 10.5281/zenodo.6870843 8a6c6dcf-1911-46fc-8ea0-48fe55c5ed11 978-84-16728-08-4 6870843 65. Carmen Mountain Shrew Sorex mulleri French: Musaraigne de Miller / German: MillerSpitzmaus / Spanish: Musarana de Carmen Other common names: Miller's Shrew Taxonomy. Sorex millers H. H. T. Jackson, 1947 , “ Madera Camp , altitude 8,000 feet [= 2438 m ], Carmen Mountains , Coahuila , Mexico .” Restricted by L. N. Carraway in 2007 to “latitude 29-0°N, longitude 102-34°W.” Sorex milleri is in the S. cinereus group and subgenus Otisorex. It is closest to S. emarginatus , which it might be conspecific with, and the south-western lineage in S. cinereus . Monotypic. Distribution. SE Coahuila and W Nuevo Leon as well as a disjunct population in NW Coahuila, NE Mexico. Descriptive notes. Head-body 51-58 mm, tail 37-44 mm, ear 5-7 mm, hindfoot 11-12 mm; weight 2:9—4-8 g. The Carmen Mountain Shrew is small, similar to the Zacatecas Shrew ( S. emarginatus ). Dorsum is light brown, and venter is noticeably whiter. Tail is long, narrow, and distinctly bicolored, being light brown above and whiter below. Skull is small and delicate in structure. I, has long strip of pigmentation on anteromedial edge. Teeth are pigmented dark red. There are five unicuspids, third is smaller than fourth, and fifth is minute. Habitat. Moist montane woodlands of Douglas fir ( Pseudotsuga menziesii , Pinaceae ), pine, and aspen or scrub pinon pine at elevations of 2400-3700 m. Food and Feeding. The Carmen Mountain Shrew probably eats primarily small invertebrates. Breeding. Lactating Carmen Mountain Shrews have been captured in July, and a female with six young was found in a nest in October. Activity patterns. Nests of Carmen Mountain Shrews have been reported to be ¢.10 cm in diameter, with c.19mm diameter entrances, located in old tunnels of Botta’s Pocket Gopher (Thomomys bottae). They were made of loosely put together grass masses, with pine needles, bits of bark, and oak leaves at the bottom, and one nest had several small feathers in it. Movements, Home range and Social organization. No information. Status and Conservation. Classified as Vulnerable on The IUCN Red List. Extent of occurrence of the Carmen Mountain Shrew is less than 20,000 km®. It is threatened by deforestation, mining, and overgrazing across its small distribution. Bibliography. Carraway (2007), Castro-Arellano & Ceballos (2014b), Delgadillo et al. (2005), Esteva et al. (2010), Hope et al. (2012), Matson, Woodman, Castro-Arellano & de Grammont (2008).