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Anang Setiawan Achmadi
Museum Zoologicum Bogoriense, Research Center for Biology, Indonesian Institute of Sciences

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TAXONOMIC STATUS OF SPINY RATS (MAXOMYS JENTINK, RODENTIA) FROM INDONESIA AND MALAYSIA BASED ON MORPHOLOGICAL STUDY Anang Setiawan Achmadi
Treubia Vol. 37 (2010): Vol. 37, December 2010
Publisher : BRIN Publishing (Penerbit BRIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/treubia.v37i0.98

Abstract

The morphological study was focused on the analysis of morphometricvariations of the spiny rats (Maxomys Jentink) across their Indonesian and Malaysianranges in order to clarify the taxonomic status of this genus. The genus was widespreadthroughout South Asia, and many taxa (species and subspecies) have been described.Univariate and multivariate analyses (Principal Component Analyses and DiscriminantFunction Analyses) were carried out based on 24 craniometric characters in 187 skulls.Results indicated that Maxomys consist of 13 species: M. whiteheadi, M. surifer, M.rajah, M. ochraceiventer, M. baeodon, M. alticola, M. musschenbroekii, M. hellwaldii,M. wattsi, M. pagensis, M. bartelsii, M. inas and one distinct population of M.whiteheadi from 16 known species of Maxomys in Malaysia and Indonesianarchipelago. The multiple regression analyses showed no sexual dimorphism in relationto the characters used; however all characters were geographically significant in somespecies.
NEW RECORDS OF TWO RARELY ENCOUNTERED, ENDEMIC RATS (RODENTIA: MURIDAE: MURINAE) FROM GUNUNG GANDANGDEWATA, WEST SULAWESI PROVINCE Anang Setiawan Achmadi; Kevin C Rowe; Jacob A Esselstyn
Treubia Vol. 41 (2014): Vol. 41, December 2014
Publisher : BRIN Publishing (Penerbit BRIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/treubia.v41i0.367

Abstract

We collected specimens of Sommer’s Sulawesi shrew-rat, Sommeromys macrorhinos, at three sites (1600, 2200, and 2600 m) and the Sulawesi small-bodied shrew-rat, Crunomys celebensis, at one site (1600 m) on Gunung Gandangdewata in the western block of the central core of Sulawesi during November 2011 and May 2012. Prior to 2011, S. macrorhinos was known only from the holotype, which was taken on 2 August 1973 at 2400 m near the summit of Gunung Tokala (upper montane forest). Previously, C. celebensis was known only from tropical lowland evergreen rain forest in the Danau Lindu valley and nearby upper drainage of the Sungai Miu in the northern portion of the westcentral mountain block in Sulawesi’s central core. The new specimens of S. macrorhinos and C. celebensis extend their known range of habitats to include the transition between lowland and montane forest. Because the original description of S. macrorhinos was based on a single specimen, we describe some external morphological features and provide measurements of new specimens as a supplement to the original description.