Crocidura ordinaria Esselstyn & Achmadi & Handika & Swanson & Giarla & Rowe 2021, new species

Autor: Esselstyn, Jacob A., Achmadi, Anang S., Handika, Heru, Swanson, Mark T., Giarla, Thomas C., Rowe, Kevin C.
Rok vydání: 2021
Předmět:
ISSN: 0003-0090
DOI: 10.5281/zenodo.5795549
Popis: Crocidura ordinaria, new species LSID: urn:lsid:zoobank. org:act: 62BBDEF5-DF9F-45B8-BA4F- 0CCDDB65B8AD HOLOTYPE: MZB 43011 (= FMNH 218726), an adult male, collected on 5 May 2012 by J.A. Esselstyn. The specimen comprises a skull (fig. 41B), formalin-fixed body, and frozen tissues. External measurements from the holotype are 142 mm �� 65 mm �� 16 mm �� 10 mm = 11.0 g. The voucher specimen and a tissue sample will be permanently curated at MZB and an additional tissue sample will be retained at FMNH. TYPE LOCALITY: Indonesia, Sulawesi Barat, Mamasa, Mamasa, Tondok Bakaru, Rantepangko, Mt. Gandang Dewata; 2.8181�� S, 119.3823�� E, 2200 m elevation. ETYMOLOGY: Ordinaria is Latin for ���ordinary,��� used in recognition that this is yet another species of shrew with no striking or unique phenotypic traits worthy of a descriptive name. GEOGRAPHIC DISTRIBUTION: Crocidura ordinaria is found in the west-central area of endemism (Mt. Gandang Dewata, West Sulawesi Province and Mt. Torompupu, Central Sulawesi Province) (fig. 39). The species spans an unusually broad elevational range from approximately 200 to 2600 m (fig. 13; table 3). DIAGNOSIS: A moderately sized shrew (tables 2, 14) with a somewhat stocky build. The pelage is medium to dark gray-brown and thick, with hairs at the middorsum typically 6���7 mm long. The venter is paler, with hairs that are pale gray at the tip, but dark gray at the base. In some specimens, the tips of some ventral hairs are reddish brown, giving the belly and chest pale cinnamon highlights. The mystacial vibrissae are short and darkly pigmented for at least half their lengths. Dorsally, the feet are nearly as dark as the pelage, but some specimens have much paler digits (fig. 40B). The tail is shorter than head and body (fig. 9) and the abundance of tail bristles and applied hairs is variable. The skull of this species is typical in its length (relative to body size) for a Sulawesi shrew but is wide at the braincase and interorbital region relative to skull length (fig. 10; table 14). The braincase, though broad, is not especially inflated vertically. The dentition is more prominent than expected given the palatal width (fig. 41B), but, otherwise, the skull of Crocidura ordinaria is unremarkable. 120��E 122��E 124��E 126��E 1.5��N 0�� C. musseri C. normalis C. ordinaria C. solita 1.5��S Recent sample sites 3��S Miller and Hollister (1921) type localities 100 km 4.5��S 0���1000 m 1000���2000 m 6��S> 2000 m COMPARISONS: Crocidura ordinaria is a moderately sized member of the Ordinary Group. The tail is shorter than head-and-body length (fig. 9; table 2). Members of the Long- Tailed Group are larger and have much longer tails. Rhoditis Group members C. rhoditis and C. pseudorhoditis are larger. Crocidura pallida and C. australis, also members of the Rhoditis Group, are only slightly larger than C. ordinaria in head-and-body length. Compared to C. ordinaria, C. pallida has paler feet dorsally, a narrower relative braincase breadth (BB /CIL) and a narrower relative interorbital width (IOW /CIL) whereas C. australis has a narrower relative interorbital width, but wider relative braincase breadth than C. ordinaria (fig. 10). All members of the Small-Bodied Group are much smaller than C. ordinaria. Within the Ordinary Group, C. nigripes has darker feet and a relatively much narrower interorbital region and braincase than C. ordinaria. Compared to C. ordinaria, C. musseri has a thicker, darker pelage, and darker feet. Crocidura normalis is darker in color, smaller in body size, has more bristles on its darkly colored tail, and its skull is narrower with a shorter relative rostral length (RL /CIL) than C. ordinaria. Crocidura solita, another member of the Ordinary Group, is difficult to distinguish morphologically from C. ordinaria. External measurements are nearly identical between these two species (fig. 9), but C. ordinaria has a higher mass-to-length ratio (fig. 17). The pelage and feet of C. ordinaria are darker and have a smaller hypothenar (fig. 40), on average, than in C. solita. Cranially, C. ordinaria has a wider skull, observable in the absolute and relative breadths at the rostrum, interorbital region, and braincase (figs. 10, 42; table 14). Principal components analyses of external and cranial dimensions show that these two species overlap broadly in multivariate morphometric space, more so with external measurements than with cranial measurements (fig. 43; tables 17, 18). WIDTH 3 ROSTRAL2.75 2.5 2.25 N = 16 N = 43 5.7 COMMENTS: See extensive comments detailing our decision to distinguish this species from Crocidura solita in the next species account. 5.4 3 M TO 5.1 4 SPECIMENS EXAMINED: Mt. Gandang Dewata (FMNH 218727���218743, 218763���218767, 218769, 218771, 218772; MZB 34806, 34808, 34816, 34820, 34827, 34833, 34856, 34870, 34871, 34876, 34877, 34883, 43011; NMV Z21910, Z21911, Z21938), Salu Tiwo (FMNH 218744), Mt. Torompupu (LSUMZ 39480; NMV C40252, C40273).
Published as part of Esselstyn, Jacob A., Achmadi, Anang S., Handika, Heru, Swanson, Mark T., Giarla, Thomas C. & Rowe, Kevin C., 2021, Fourteen New, Endemic Species Of Shrew (Genus Crocidura) From Sulawesi Reveal A Spectacular Island Radiation, pp. 1-109 in Bulletin of the American Museum of Natural History 2021 (454) on pages 82-86, DOI: 10.1206/0003-0090.454.1.1, http://zenodo.org/record/5788835
Databáze: OpenAIRE
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