Episoriculus baileyi (Thomas, 1914)

Russell A. Mittermeier & Don E. Wilson, 2018, Soricidae, Handbook of the Mammals of the World – Volume 8 Insectivores, Sloths and Colugos, Barcelona: Lynx Edicions, pp. 332-551 : 450

155.

Bailey's Brown-toothed Shrew

Episoriculus baileyi

French: Musaraigne de Bailey / German: Bailey-Braunzahnspitzmaus / Spanish: Musarana de dientes marrones de Bailey

Other common names: Bailey's Long-tailed Shrew

Taxonomy. Soriculus baileyi Thomas, 1914 ,

“ Tsu River . Alt. 7,500’ [= 2286 m].”

Sovereignty over the borderland between China (South Tibet) and India (Arunachal Pradesh, formerly North East Frontier Agency) has been disputed since the early 1990s. The type locality “Tsu River,” located in this area, did not reflect this ongoing controversy. Episoriculus baileyi was considered a subspecies of E. leucops until recently. Taxonomic relationship between these

two taxa remains suspicious. Distributional boundary between E. baileyi and E. leucops is not clear because they were considered conspecific until recently. Population from Yunnan, China, was assigned to baileyi but are indeed E. leucops . Monotypic.

Distribution. SW China (S Tibet [= Xizang]), NE India, N Myanmar, and N Vietnam.

Descriptive notes. Head-body 63-81 mm, tail 60-76 mm, ear 7-10 mm, hindfoot 13-14-5 mm. No specific data are available for body weight. Condylo-incisive lengths are 19-20-6 mm, and tooth rows are 8-1-9-3 mm. Bailey's Brown-toothed Shrew is large. Tail is 85-100% of head-body length and covered with short hair along its entire length. Dorsum is dark brown or dark slay-gray, washed blackish, and venter is light brown. Tympanic rings are large. Ascending ramus of mandible is high. I' is highly developed and robust. It has four upper unicuspids. Upper unicuspids are crowded with developed cingula, extend more longitudinally and less transversely, and are longer than in the other species of Episoriculus . First upper unicuspid is low and only slightly higher than talon (posterior cusp) of upper incisor.

Habitat. Montane forested habitats at elevations of 1567-2682 m.

Food and Feeding. Bailey's Brown-toothed Shrew is insectivorous.

Breeding. No information.

Activity patterns. Bailey's Brown-toothed Shrew is terrestrial and expected to move on the ground.

Movements, Home range and Social organization. No information.

Status and Conservation. Not assessed on The IUCN Red List. Bailey’s Brown-toothed Shrew was considered conspecific with the Long-tailed Brown-toothed Shrew ( E. leucops ) that is classified as Least Concern. Distribution of Bailey's Brown-toothed Shrew is large, and those in northern India and Tibetan Plateau are probably well protected. Population in northern Myanmar (= Burma) might be threatened by deforestation.

Bibliography. Hoffmann (1985), Motokawa & Lin Liangkong (2005), Smith & Yan Xie (2008).

Figures

136. Elliot’s Short-tailed Shrew (Blarina hulophaga), 137. Northern Short-tailed Shrew (Blarina brevicaudus), 138. Southern Short-tailed Shrew (Blarina carolinensis), 139. Everglades Short-tailed Shrew (Blarina peninsulae), 140. Sherman’s Short-tailed Shrew (Blarina shermani), 141. Sichuan Short-tailed Shrew (Blarinella quadraticauda), 142. Burmese Short-tailed Shrew (Blarinella wardi), 143. Indochinese Short-tailed Shrew (Blarinella griselda), 144. Chinese Mole Shrew (Anourosorex squamaipes), 145. Taiwanese Mole Shrew (Anowrosorex yamashinai), 146. Assam Mole Shrew (Anowrosorex assamensis), 147. Giant Mole Shrew (Anourosorex schmid), 148. Desert Gray Shrew (Notiosorex crawfordi), 149. Cockrum’s Gray Shrew (Notiosorex cockrumi), 150. Large-eared Gray Shrew (Notiosorex evolis), 151. Villa’s Gray Shrew (Notiosorex villa), 152. Mexican Shrew (Megasorex gigas), 153. Taiwanese Brown-toothed (Shrew Epusoriculusfumidus), 154. Arboreal Brown-toothed Shrew (Episoriculus macrurus), 155. Bailey's Brown-toothed Shrew (Episoriculus baileyi), 156. Long-tailed Brown-toothed Shrew (Episoriculus leucops), 157. Hodgson’s Brown-toothed Shrew (Episoriculus caudatus), 158. Sichuan Brown-toothed Shrew (Episoriculus sacratus), 159. Hidden Brown-toothed Shrew (Episoriculus umbrinus), 160. Nepalese Brown-toothed Shrew (Episoriculus soluensis), 161. Himalayan Shrew (Soriculus nigrescens), 162. De Winton’s Brown-toothed Shrew (Chodsigoa hypsibia), 163. Pygmy Brown-toothed Shrew (Chodsigoa parva), 164. Smith’s Brown-toothed Shrew (Chodsigoa smithii), 165. Salenski’s Brown-toothed Shrew (Chodsigoa salenskii), 166. Dusky Brown-toothed Shrew (Chodsigoa furva), 167. Lesser Taiwanese Brown-toothed Shrew (Chodsigoa sodalis), 168. Van Sung’s Brown-toothed Shrew (Chodsigoa caovansunga), 169. Hoffmann’s Brown-toothed Shrew (Chodsigoa hoffmanni), 170. Lowe’s Brown-toothed Shrew (Chodsigoa parca), 171. Bornean Water Shrew (Chimarrogale phaeura), 172. Sumatran Water Shrew (Chimarrogale sumatrana), 173. Malayan Water Shrew (Chimarrogale hantu), 174. Chinese Water Shrew (Chimarrogale styani), 175. Himalayan Water Shrew (Chimarrogale himalayica), 176. Leander’s Water Shrew (Chimarrogale leander), 177. Japanese Water Shrew (Chimarrogale platycephala), 178. Elegant Water Shrew (Nectogale elegans), 179. Mediterranean Water Shrew (Neomys anomalus), 180. Transcaucasian Water (Shrew Neomysteres), 181. Eurasian Water Shrew (Neomys fodiens)

Distribution. SW China (S Tibet [= Xizang]), NE India, N Myanmar, and N Vietnam.