Crocidura umbra, Demos, 2016
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publication ID |
https://doi.org/ 10.5281/zenodo.6870843 |
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DOI |
https://doi.org/10.5281/zenodo.6870166 |
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persistent identifier |
https://treatment.plazi.org/id/3D474A54-A074-8718-FAF9-A9B714E4F495 |
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treatment provided by |
Felipe |
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scientific name |
Crocidura umbra |
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Javan Ghost White-toothed Shrew
French: Crocidure fantdme / German: Gede-WeilRzahnspitzmaus / Spanish: Musarana fantasma de Java
Other common names: Javan Ghost Shrew
Taxonomy. Crocidura umbra Demos et al., 2016 ,
“ Indonesia, West Java, Mt. Gede, Cibodas , 6 74818°S, 106 99388°E, 1,611 m elevation.” GoogleMaps
In 2013 and 2014, treated as part of C. maxi byJ. A. Esselstyn and colleagues, but more recent studies led to separation of Mount Gede form as a new, undescribed species, with C. max: restricted to eastern Java and the Lesser Sundas. Phylogenetically, C. umbra is most closely related to C. monti-
cola from Mount Iljen (East Java) and both are related to three other allopatric clades of C. monticola and an undescribed Crocidura from Sumatra; this renders C. monticola paraphyletic. Monotypic.
Distribution. Known only from a small area on Mt Gede-Pangrango, WJava at 1611 m and 1950 m elevation. View Figure
Descriptive notes. Head-body 63-71 mm, tail 47-58 mm, hindfoot 11-13 mm; weight 5-7-2 g. Condylo-Incisive length 17-2-18-3 mm. The Javan Ghost White-toothed Shrew is a small shrew, with a relatively thick, medium-length tail (c.78% of head— body length). It is smaller than other Crocidura from west and central Java, such as the Thick-tailed White-toothed Shrew ( C. brunnea ), the Oriental White-toothed Shrew ( C. orientalis ), and the Javan Long-tailed White-toothed Shrew (C. abscondita). On Mount Gede, where the Javan Ghost White-toothed Shrew and the Sunda Whitetoothed Shrew ( C. monticola ) are syntopic, the population of Sunda White-toothed Shrew is small sized and there is no overlap between the two species in any craniodental measurements. Averages larger for external and cranial measurements than the Sunda White-toothed Shrew throughout Java. Dorsal pelage is dark brown, with dark gray bases and chocolate-brown tips; ventral pelageis slightly paler. Dorsal surface of the forefeet is pale brown, that of the hindfeet dark brown with scattered white hairs; claws on foreand hindfeet are well developed. Tail is dark brown above and lighter on the ventral side, with bristle hairs along the proximal half. In the Javan White-toothed Shrew ( C. maxi ), which is similar in size and proportions, upperparts are grayer and underparts paler than in the Javan Ghost White-toothed Shrew. Skull is larger in the Javan Ghost White-toothed Shrew compared to the Sunda White-toothed Shrew, the zygomatic plate somewhat broader, and the braincase less rounded.
Habitat. Tropical montane forest.
Food and Feeding. No information.
Breeding. No information.
Activity patterns. No information.
Movements, Home range and Social organization. On Mount Gede (c.1600 m), the Javan Ghost White-toothed Shrew occurs syntopically with at least three other Crocidura species : the Oriental White-toothed Shrew, the Javan Long-tailed White-toothed Shrew, and the Sunda White-toothed Shrew.
Status and Conservation. Not assessed on The IUCN Red List. Mount Gede is less than 60 km from one the world’s most populous megacities. The species has a restricted range and is threatened by habitat loss. Recent surveys on four other mountains in West, Central, and EastJava did not find the species. Extensive field surveys are needed to permit a detailed assessment of threats.
Bibliography. Demos, Achmadi, Giarla et al. (2016), Demos, Achmadi, Handika et al. (2017), Demos, Kerbis Peterhans et al. (2014), Esselstyn, Achmadi & Maharadatunkamsi (2014), Esselstyn, Maharadatunkamsi etal. (2013), Kitchener et al. (1994).
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
