Sorex unguiculatus Dobson 1890

• Main Authors: Russell A. Mittermeier, Don E. Wilson
• Format: Other/Unknown Material
• Language: unknown
• Published: Lynx Edicions 2018
• Subjects: Biodiversity; Taxonomy; Animalia; Chordata; Mammalia; Soricomorpha; Soricidae; Sorex; Sorex unguiculatus; Sakhalin
• Online Access: https://doi.org/10.5281/zenodo.6869599; http://treatment.plazi.org/id/3D474A54A02E8743FA0DAD6F116FFDD5

14. Long-clawed Shrew Sorex unguiculatus French: Musaraigne a longues griffes / German: AmurLangkrallen-Spitzmaus / Spanish: Musarana de unas largas Taxonomy. Sorex unguiculatus Dobson, 1890, “ Saghalien Island [= Sakhalin Island]; Nikolajewsk, at the mouth of the Amur River,” Russia. Evidence from mtDNA and nDNA sequences classifies S. unguiculatus in the caecutiens group. Monotypic. Distribution. NE China (N Inner Mongolia [= Nei Mongol]), S Russian Far East, S Kuril Is, and N Japan (Hokkaido), including many small offshore islands;it possibly occurs in North Korea. Descriptive notes. Head-body 70-91 mm,tail 40-55 mm, hindfoot 12-14 mm; weight 6-9-15 g. Pregnant Long-clawed Shrews can weigh more than 17 g. Itis one of the largest species of Sorex. Tail is bicolored and usually longer than 50% of head-body length. Pelage is bicolored. Back varies from brown in juveniles to dark brown in overwintering adults. Dark color of back gradually changes to brown on sides. Belly varies from reddish tinted dark gray in juveniles to intensely gray or grayish brown in overwintering adults. Demarcation between sides and belly colors is indistinct. The Long-clawed Shrew has broad forepaws with well-developed claws up to 5 mm, which are appreciably longer than in other red-toothed shrews. Chromosomal complement has 2n = 42 and FN = 70 on Hokkaido, with 14 pairs of metacentric and submetacentric autosomes and six pairs of acrocentric autosomes, and FN = 68 in the Russian Far East, with 13 pairs of metacentric and submetacentric autosomes and seven pairs of acrocentric autosomes. X-chromosomeis large acrocentric, and Y-chromosome is small acrocentric. Habitat. Rich broad-leaved and cedar-broad-leaved forests. The Long-clawed Shrew is almost completely distributed in such forests. It is occasionally found in floodplain forests but is absent from forest-steppe habitats. A substantial litter layer is an important habitat component. Food and Feeding. Earthworms are the main component of the diet of the Longclawed Shrew throughout ...