Crocidura hutanis Ruedi &amp; Vogel 1995
Creators: name: Mittermeier, Russell A.
name: Wilson, Don E.
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Soricomorpha
Soricidae
Crocidura
Crocidura hutanis

description: 234. Hutan White-toothed Shrew <i>Crocidura hutanis</i> <b>French:</b> Crocidure des foréts / <b>German:</b> Hutan-Weil3zahnspitzmaus / <b>Spanish:</b> Musarana de bosque <b>Other common names:</b> Hutan Shrew <b>Taxonomy.</b> Crocidura hutanis Ruedi &amp; Vogel, 1995, Retambe (03° 31° N, 97° 46 E), Alas Valley (300 m), Gunung Leuser National Park, Aceh, northern Sumatra, Indonesia. An early specimen from Sumatra with a damaged skull was mistakenly attributed to brunnea by F. A. Jentink in 1888, although it does not show the characteristics of that species. Much later, in 1995, M. Ruedi examined the skull and noted it was much smaller than Javanese brunnea, and he assigned it to a new form, hutanis. Crocidura hutanis is part of a species complex that also includes beccarii, lepidura, paradoxura, and vosmaeri from Sumatra, and brunnea and orientalis from Java. Monotypic. <b>Distribution.</b> N Sumatra, where it appears to be widespread;it might occur more widely across the island. <b>Descriptive notes.</b> Head-body 72-83 mm, tail 51-61 mm, ear 7-8 mm, hindfoot 13-3-15 mm; weight 10-12 g. Dorsal pelage short and slate gray at the hair bases but dark brown near the tips. Venteris slightly more grayish or chocolate brown. Naked surfaces at face and feet are dark brown to blackish. The rather short tail is covered by very small scales and some longer bristle hairs, which can reach 30-40% of the tail length. Hindfeet are large. Skull with visible nuchal crests is elongated and slender with a very flat profile. The first incisor is about twice as large as the first incisor of the similarly sized Sumatran Long-tailed White-toothed Shrew (C. paradoxura), whose dentition is also generally more robust than in the Hutan White-toothed Shrew. First upper unicuspid significantly larger than second and third unicuspids. Mandible with relatively short angular process. Greatest length of skull 21-6-23-1 mm. Karyotype polymorphism due to centric fusion 2n = 36-38. <b>Habitat.</b> Mainly known from lowland rainforest at altitudes of 300-600 m. In Gunung Leuser National Park, Hutan White-toothed Shrews were found in a regenerating lowland rainforest with dense undergrowth and scattered rotting tree trunks. Probably parapatric with the mountain species Beccari’s White-toothed Shrew (C. beccarii), but altitudinal segregation remains to be documented. <b>Food and Feeding.</b> At the places where Hutan White-toothed Shrews were caught, there were a large number of grasshoppers that could potentially serve as prey for them. However, detailed investigations are still necessary for the exact determination of the diet. <b>Breeding.</b> No information. <b>Activity patterns.</b> Hutan White-toothed Shrews are terrestrial. <b>Movements, Home range and Social organization.</b> No information. <b>Status and Conservation.</b> Classified as Least Concern on The IUCN Red List. Relative abundance and population size of the Hutan White-toothed Shrew are unknown, but according to Ruedi in 1995 it could be fairly widespread. The species may be threatened by deforestation, although its adaptability to anthropogenic habitats such as the rapidly expanding oil palm plantations has been poorly studied. The Hutan Whitetoothed Shrew occurs at least in the Gunung Leuser National Park and possibly also in some other protected areas. <b>Bibliography.</b> Demos etal. (2016), Hutterer (2005b), Jentink (1888), Lunde et al. (2017), Ruedi (1995, 1996), Ruedi &amp; Vogel (1995).
description: Published as part of <i>Russell A. Mittermeier &amp; Don E. Wilson, 2018, Soricidae, pp. 332-551 in Handbook of the Mammals of the World – Volume 8 Insectivores, Sloths and Colugos, Barcelona :Lynx Edicions</i> on page 478, DOI: 10.5281/zenodo.6870843