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Issue: Vol. 2985 No. 1: 4 Aug. 2011
Type: Articles
Published: 2011-08-04
DOI: 10.11646/zootaxa.2985.1.3
Page range: 41–54
Abstract views: 33
PDF downloaded: 2

Morphometric and morphological variation in Myotis simus Thomas (Chiroptera, Vespertilionidae), with an appraisal of the identity of Myotis guaycuru Proença based on the analysis of the type material

Campus Fiocruz da Mata Atlântica, Fundação Oswaldo Cruz, Rio de Janeiro, RJ, Brazil
Instituto de Biologia, Universidade Federal Rural do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
Departamento de Vertebrados, Museu Nacional, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
Mammalia Myotis Myotinae taxonomy synonymy multivariate analyses South America

Abstract

Twelve species are recognized in the South American bat genus Myotis Kaup (Vespertilionidae, Myotinae), with several nominal forms currently regarded as synonyms, among them Myotis guaycuru Proença, 1943. Its holotype, so far the only specimen assigned to the species, has not been examined in recent taxonomic reviews. To address the taxonomic status of M. guaycuru, we located and redescribed its holotype and compared it to representatives and/or descriptions of all South American species in the genus. Qualitative traits, namely the plagiopatagium attached at ankles, the short and wooly fur and the lingually displaced P3, unambiguously assign the holotype of M. guaycuru to Myotis simus Thomas (1901). The analysis of cranial variation and pelage color across a wide geographical range of M. simus reveals morphometric and morphological discontinuity between Bolivian and Amazonian/Peruvian samples, the latter including topotypes of M. simus. The holotype of M. guaycuru was found to be morphometrically and morphologically more similar to these Amazonian samples than to the geographically nearer Bolivian sample, preventing the use of this nominal form to refer to the Bolivian population if its distinction suggested by morphometric analyses is confirmed by the analyses of other character systems.

References

  1. Baud, F.J. & Menu, H. (1993) Paraguayan bats of the genus Myotis, with a redefinition of Myotis simus (Thomas, 1901). Revue Suisse de Zoologie, 100, 595–607.

    Bianconi, G.V. & Pedro, W.A. (2007) Família Vespertilionidae. In: Reis, N.R., Peracchi, A.L., Pedro, W.A. & Lima, I.P. (Eds.), Morcegos do Brasil. Editora da Universidade Estadual de Londrina, Londrina, pp. 167–195.

    Carter, D.C. & Dolan, P.G. (1978) Catalog of type specimens of Neotropical bats in selected European museums. Special Publications, The Museum, Texas Tech University Press, 15, 1–136.

    Cherem, J.J., Simões-Lopes, P.C., Althoff, S. & Graipel, M.E. (2004) Lista dos mamíferos do Estado de Santa Catarina, sul do Brasil. Mastozoologia Neotropical, 11, 151–184.

    Findley, J.S. (1993) Bats, a community perspective. Cambridge University Press, Cambridge, United Kingdom.

    Gardner, A.L. (2008) Mammals of South America. Volume 1, Marsupials, Xenarthrans, Shrews, and Bats. The University of Chicago Press, Chicago, xx + 669 pp.

    Handley, C.O., Jr. (1960) Descriptions of new bats from Panama. Proceedings of the United States National Museum, 112, 459–479.

    Krazanowski, W.J. & Lai, Y.T. (1988) A criterion for determining the number of % groups in a data set using sum-of-squares clustering. Biometrics, 44, 23–34.

    LaVal, R.K. (1973) A revision of the neotropical bats of the genus Myotis. Natural History Museum, Los Angeles County, Science Bulletin, 15, 1–54.

    Little, R.J.A. & Rubin, D.B. (1987) Statistical analysis with missing data. John Wiley & Sons, New York, xviii + 392 pp.

    López-González, C. (2005) Murciélagos de Paraguay. Publicaciones MAB, 9, 1–316.

    López-González, C., Presley, S.J., Owen, R.D. & Willig, M.R. (2001) Taxonomic status of Myotis (Chiroptera: Vespertilionidae) in Paraguay. Journal of Mammalogy, 82, 138–160.

    Manly, B.F. (1994) Multivariate statistical methods, a primer. 2nd ed. Chapman & Hall, London, 215 pp.

    Mantel, R.M. (1967) The detection of disease clustering and a general regression approach. Cancer Research, 27, 209–220.

    Miller, G.S., Jr. & Allen, G.M. (1928) The american bats of the genera Myotis and Pizonyx. Bulletin of the United States National Museum, 144, 1–128.

    Moratelli, R. (2008) Revisão taxonômica das espécies de Myotis Kaup, 1829 do Brasil (Mammalia, Chiroptera, Vespertilionidae): uma abordagem morfológica e morfométrica. PhD Thesis, Universidade Federal do Rio de Janeiro, Rio de Janeiro, ix + 265 pp.

    Neff, N.A. & Marcus, L.F. (1980) A survey of multivariate methods for systematics. Private published, New York, x + 230 pp.

    Peracchi, A.L., Lima, I.P., Reis, N.R., Nogueira, M.R. & Ortencio-Filho, H. (2006) Ordem Chiroptera. In: Reis, N.R., Peracchi, A.L., Pedro, W.A. & Lima, I.P. (Eds.), Mamíferos do Brasil. Editora da Universidade Estadual de Londrina, Londrina, pp. 153–230.

    Proença, A.M.C. (1943) ‘‘Myotis guaycurú’’ n.sp., morcego proveniente de Salobra, Estado de Mato Grosso (Microchiroptera, Vespertilionidae). Revista Brasileira de Biologia, 3, 313–315.

    Ridgway, R. (1912) Color standards and color nomenclature. Privately published, Washington, D.C., 48 pp. + 53 pl.

    Simmons, N.B. (2005) Order Chiroptera. In: Wilson, D.E. & Reeder, D.M. (Eds.), Mammal Species of the World: a taxonomic and geographic reference. 3th Ed. Smithsonian Institution Press, Washington, D.C., pp. 312–529.

    Strauss, R.E., Atanassov, M.N. & Oliveira, J.A. (2003) Evaluation of the principal-component and expectation-maximization methods for estimating missing data in morphometric studies. Journal of Vertebrate Paleontology, 23, 284–296.

    Thomas, O. (1901) On a collection of bats from Pará. Annals and Magazine of Natural History, series 7, 8, 189–193.

    Thomas, O. (1902) On Azara’s “Chauve-souris onzieme” (Myotis ruber, Geoff.) and a new species allied to it. The Annals and Magazine of Natural History Series, 7, 10, 494–495.