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Mammalian Biology

, Volume 76, Issue 5, pp 592–607 | Cite as

Geographic variation in South American populations of Myotis nigricans (Schinz, 1821) (Chiroptera, Vespertilionidae), with the description of two new species

  • Ricardo MoratelliEmail author
  • Adriano L. Peracchi
  • Daniela Dias
  • João A. de Oliveira
Original Investigation

Abstract

The genus Myotis (Vespertilionidae, Myotinae) comprises a diverse group of small to large-sized vespertilionid bats that present a worldwide distribution. Twelve South American species are currently recognized. In this paper we evaluate the morphological and morphometric variation observed in South American populations of the most widespread species, Myotis nigricans. Against this background, two forms can be morphologically distinguished from M. nigricans and other known South American species. We describe these new species, documenting their diagnostic external and cranial characters by comparing them to other sympatric and cryptic species of South American Myotis. In addition, we provide an emended diagnosis of Myotis nigricans.

Keywords

Myotinae South America Taxonomy Morphometrics Morphology 

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Copyright information

© Deutsche Gesellschaft für Säugetierkunde 2011

Authors and Affiliations

  • Ricardo Moratelli
    • 1
    Email author
  • Adriano L. Peracchi
    • 2
  • Daniela Dias
    • 3
  • João A. de Oliveira
    • 4
  1. 1.Campus Fiocruz da Mata AtlânticaFundação Oswaldo CruzRio de JaneiroBrazil
  2. 2.Instituto de BiologiaUniversidade Federal Rural do Rio de JaneiroRio de JaneiroBrazil
  3. 3.Instituto Oswaldo CruzFundação Oswaldo CruzRio de JaneiroBrazil
  4. 4.Departamento de Vertebrados, Museu NacionalUniversidade Federal do Rio de JaneiroRio de JaneiroBrazil

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