Lenothrix Miller 1903
Authors/Creators
Description
Lenothrix Miller 1903
Lenothrix Miller 1903, Proc. U. S. Natl. Mus., 26 (1317): 466.
Type Species: Lenothrix canus Miller 1903
Species and subspecies: 1 species:
Species Lenothrix canus Miller 1903
Discussion: Pithecheir Division. Chromosomal and biochemical data suggested a close phylogenetic link between Lenothrix and Niviventer (Chan et al., 1979), and a high divergence from species of Maxomys, which were once placed in Lenothrix (Gadi and Sharma, 1983). In its cranial and dental morphology, Lenothrix is unlike any species in those genera; derived molar occlusal patterns are much like those in Pithecheir and Lenomys (Chaimanee, 1998; Misonne, 1969; Musser and Newcomb, 1983), but spermatozoal conformation is highly divergent from any Sundaic murine. In sum, Lenothrix is a Sundaic endemic characterized by many primitive external, cranial, dental, and chromosomal features and a few derived dental and spermatozoal traits; despite several claims, its phylogenetic relationships still require illumination (see discussions in Chaimanee, 1998; Breed and Yong, 1986; Musser, 1981 a, b, c; Musser and Newcomb, 1983). Its inclusion here in a Pithecheir Division reflects an hypothesis that has to be tested by analyses of molecular and a range of morphological data. Lenothrix was included in a Pithecheir Section of a larger Micromys Group by Pavlinov et al. (1995 a). Lenothrix may be a member of one of the earliest groups to have diverged from the core murine lineage as represented by a Progonomys like ancestor (Chaimanee, 1998). Sundaic Pithecheir and Pithecheirops, along with Sulawesian Eropeplus, Lenomys, and Margaretamys, are likely members of the same cluster.
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Linked records
Additional details
Identifiers
Related works
- Is part of
- Book chapter: 10.5281/zenodo.7316535 (DOI)
- Book chapter: http://publication.plazi.org/id/A2267A57FF8A65DA07E1D2E970F9422A (URL)
- Is source of
- https://biodiversitypmc.sibils.org/collections/plazi/96AA04D3FADAC1D089F39934EF1EBCCB (URL)
- https://www.gbif.org/species/231539992 (URL)
Biodiversity
References
- Chan, K. L., S. S. Dhaliwal, and H. S. Yong. 1979. Protein variation and systematics of three subgenera of Malayan rats (Rodentia: Muridae, genus Rattus Fischer). Comparative Biochemistry and Physiology, 64 B: 329 - 337.
- Gadi, I. K., and T. Sharma. 1983. Cytogenetic relationships in Rattus, Cremnomys, Millardia, Nesokia and Bandicota. Genetica, 61: 21 - 40.
- Chaimanee, Y. 1998. Plio-Pleistocene rodents of Thailand. Thai Studies in Biodiversity No. 3: 303 pp.
- Misonne, X. 1969. African and Indo-Australian Muridae: Evolutionary trends. Annales Musee Royal de l'Afrique Centrale, Tervuren, Belgique, Serie IN- 8, Sciences Zoologiques, 172: 1 - 219.
- Musser, G. G., and C. Newcomb. 1983. Malaysian murids and the giant rat of Sumatra. Bulletin of the American Museum of Natural History, 174: 327 - 598.
- Breed, W. G., and H. S. Yong. 1986. Sperm morphology of murid rodents from Malaysia and its possible phylogenetic significance. American Museum Novitates, 2856: 1 - 12.
- Musser, G. G. 1981 a. A new genus of arboreal rat from West Java, Indonesia. Zoologische Verhandelingen uitgegeven door het Rijksmuseum van Natuurlijke Historie te Leiden, 189: 1 - 35.
- Pavlinov, I. Ya, E. L. Yakhontov, and A. K. Agadzhanyan. 1995 a. [Mammals of Eurasia. I. Rodentia. Taxonomic and geographic guide.] Archives of the Zoological Museum, Moscow State University, 32: 289 pp. (in Russian).