Crocidura panayensis, Hutterer, 2007

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 : 480

240.

Panay White-toothed Shrew

Crocidura panayensis

French: Crocidure de Panay / German: Panay-WeiRzahnspitzmaus / Spanish: Musarana de Panay

Other common names: Panay Shrew

Taxonomy. Crocidura panayensis Hutterer, 2007 ,

“The Philippines, Panay, NW peninsula , Sibaliw , Municipality of Buruanga [11° 49-188’ N, 121° 58-064’ E], 450 m.”

Previously assigned to C. palawanensis by R. Hutterer in 2002. Specimens have been studied in more detail and are now separated as C. panayensis . According to genetic studies done byJ. A. Esselstyn and colleagues in 2009 and 2010,this speciesis related to C. negrina , C. ninoyi, and C. min-

dorus within a central Philippine clade. Monotypic.

Distribution. Known only from NW peninsula and SW Panay I, Philippines.

Descriptive notes. Head-body 65-74 mm, tail 58-64 mm, hindfoot 14-4-15-4 mm; weight 10-12-5 g. The Panay White-toothed Shrew is a medium-sized shrew, with a long tail (87% of head-body length). It is comparable in size to other Philippine shrews, namely the Mindoro White-toothed Shrew ( C. mindorus ), the Sibuyan Whitetoothed Shrew (C. ninoyi), the Negros White-toothed Shrew ( C. negrina ), the Mount Malindang White-toothed Shrew ( C. grandis ), and the Palawan White-toothed Shrew ( C. palawanensis ). Upperparts are blackish brown, which graduates toward dusky brown on venter. Tail is covered (about 47%) with long bristles on the proximal half, dusky above and slightly paler on underside. Dorsal part of foreand hindfeet are covered by dark hairs, with lateral surfaces slightly darker brown than the inner surfaces; structure of hindfoot (elongate shape, prominent plantar granulae, strong pigmentation) replicates those of most Philippine Crocidura . Skull large and robust, with a long and wide rostrum. The Panay White-toothed Shrew has a very narrow interorbit, and for this reason it was previously assigned to the Palawan White-toothed Shrew, but that species has a longer tail and lower pilosity, and differences in dental traits. Females have two inguinal nipples.

Habitat. Known from the forest floor of primary forest at elevations of 450-480 m in the north-western peninsula of Panay; also present in lightly disturbed forest at elevations of 800-900 m in south-western Panay. Specimens were captured in pitfall buckets put out for frogs.

Food and Feeding. No information.

Breeding. No information.

Activity patterns. Panay White-toothed Shrews are terrestrial.

Movements, Home range and Social organization. No information.

Status and Conservation. Not assessed on The IUCN Red List. Probably widespread in the mountains of Panay, in primary and secondary forest. In south-western Panay, the Panay White-toothed Shrew appearsto be either uncommon to rare or difficult to capture. Panay has undergone extensive deforestation and surveys of additional montane areas are needed.

Bibliography. Esselstyn & Brown (2009), Esselstyn & Goodman (2010), Esselstyn & Oliveros (2010), Esselstyn, Maher & Brown (2011), Esselstyn, Timm & Brown (2009), Heaney et al. (2010), Hutterer (2002, 2007b).

Figures

226. Malayan White-toothed Shrew (Crocidura malayana), 227. Peninsular White-toothed Shrew (Crocidura negligens), 228. Black-footed White-toothed Shrew (Crocidura nigripes), 229. Bornean White-toothed Shrew (Crocidura foetida), 230. Kinabalu White-toothed Shrew (Crocidura baluensis), 231. Thick-tailed White-toothed Shrew (Crocidura brunnea), 232. Oriental White-toothed Shrew (Crocidura orientalis), 233. Bangka White-toothed Shrew (Crocidura vosmaeri), 234. Hutan White-toothed Shrew (Crocidura hutanis), 235. Beccari’s White-toothed Shrew (Crocidura beccarii), 236. Sumatran Giant White-toothed Shrew (Crocidura lepidura), 237. Mount Malindang White-toothed Shrew (Crocidura grandis), 238. Mindanao White-toothed Shrew (Crocidura beata), 239. Mindoro White-toothed Shrew (Crocidura mindorus), 240. Panay White-toothed Shrew (Crocidura panayensis), 241. Negros White-toothed Shrew (Crocidura negrina), 242. Luzon White-toothed Shrew (Crocidura grayi), 243. Sibuyan White-toothed Shrew (Crocidura ninoyi), 244. Palawan White-toothed Shrew (Crocidura palawanensis), 245. Javan Long-tailed White-toothed Shrew (Crocidura abscondita), 246. Gathorne’s White-toothed Shrew (Crocidura gathornei), 247. Horsfield’s White-toothed Shrew (Crocidura horsfieldii), 248. Sinharaja White-toothed Shrew (Crocidura hikmiya), 249. Sri Lankan White-toothed Shrew (Crocidura miya), 250. Lesser Ryukyu White-toothed Shrew (Crocidura wataser), 251. Southeast Asian White-toothed Shrew (Crocidura fuliginosa), 252. Large White-toothed Shrew (Crocidura dracula), 253. Sumatran Long-tailed White-toothed Shrew (Crocidura paradoxura), 254. Dsinezumi White-toothed Shrew (Crocidura dsinezuma), 255. Chinese White-toothed Shrew (Crocidura rapax), 256. Ussuri White-toothed Shrew (Crocidura lasiura), 257. Asian Gray White-toothed Shrew (Crocidura attenuata), 258. Zaitsev’s White-toothed Shrew (Crocidura zaitsevi), 259. Indochinese White-toothed Shrew (Crocidura indochinensis), 260. Hainan White-toothed Shrew (Crocidura wuchihensis), 261. Timor White-toothed Shrew (Crocidura tenuis), 262. Javan White-toothed Shrew (Crocidura maxi), 263. Javan Ghost White-toothed Shrew (Crocidura umbra), 264. Sunda White-toothed Shrew (Crocidura monticola), 265. Neglected White-toothed Shrew (Crocidura neglecta)

Distribution. Known only from NW peninsula and SW Panay I, Philippines.