Mantilla-Meluk Hugo, Muñoz-Garay Javier
Universidad del Quindío, Armenia, Colombia.; Email:
Universidad Distrital Francisco José de Caldas, Bogotá, Colombia.; Email:
Zootaxa. 2014 Apr 28;3793:60-70. doi: 10.11646/zootaxa.3793.1.2.
We document the first confirmed Colombian records of Myotis keaysi pilosatibialis LaVal, 1973 from various localities on the Colombian Caribbean and the Eastern Cordillera of the Colombian Andes. These records confirm geographic overlap between M. k. pilosatibialis and the nominate subspecies M. k. keaysi J. A. Allen, 1914, in northeastern Colombia, questioning the subspecific status of M. k. pilosatibialis. Models of potential distribution, produced for the two taxa by the application of the Maxent algorithm, show a potential geographic overlap in the northeastern portion of the Andes of Colombia and Venezuela. In order to clarify the taxonomic status of putative M. keaysi variants, we analyzed the variation of Colombian representatives of M. keaysi through a Principal Components Analysis (PCA), and a Discriminant Function Analysis (DFA) performed on 18 cranio-dental measurements, as well as the analysis of discrete characters. The morphological independence between M. k. keaysi and M. k. pilosatibialis was supported statistically in our PCA and DFA, as well as by the presence of unique discrete characters, lending support to the recognition of M. k. pilosatibialis as full species. Herein, we include new discrete characters setting apart M. pilosatibialis from the morphologically similar species M. keaysi.
我们记录了1973年拉瓦尔命名的基氏鼠耳蝠指名亚种（Myotis keaysi pilosatibialis）在哥伦比亚加勒比地区和哥伦比亚安第斯山脉东部山脉各地点的首批经确认的哥伦比亚记录。这些记录证实了基氏鼠耳蝠指名亚种与1914年J. A. 艾伦命名的指名亚种基氏鼠耳蝠（Myotis keaysi keaysi）在哥伦比亚东北部存在地理重叠，这对基氏鼠耳蝠指名亚种的亚种地位提出了质疑。通过应用最大熵算法（Maxent）为这两个分类单元生成的潜在分布模型显示，在哥伦比亚和委内瑞拉安第斯山脉的东北部存在潜在的地理重叠。为了阐明基氏鼠耳蝠假定变种的分类地位，我们通过主成分分析（PCA）和对18项颅骨 - 牙齿测量数据进行的判别函数分析（DFA），以及对离散特征的分析，研究了基氏鼠耳蝠哥伦比亚代表种的变异情况。在我们的主成分分析和判别函数分析中，以及通过独特离散特征的存在，从统计学上支持了基氏鼠耳蝠指名亚种与基氏鼠耳蝠之间的形态独立性，这为将基氏鼠耳蝠指名亚种认定为独立物种提供了支持。在此，我们列出了将基氏鼠耳蝠指名亚种与形态相似的基氏鼠耳蝠区分开来的新离散特征。
