Mângia Sarah, Koroiva Ricardo, Santana Diego José
Instituto de Biociências, Universidade Federal de Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul, Brazil.
Departamento de Sistemática e Ecologia, Universidade Federal da Paraíba, João Pessoa, Paraíba, Brazil.
PeerJ. 2020 Sep 18;8:e9887. doi: 10.7717/peerj.9887. eCollection 2020.
The combination of different approaches has successfully delimited new species within many Neotropical species complexes traditionally classified as a single nominal organism. Recent studies have shown that the Amazonian endemic genus , currently composed of 12 small-sized species, could harbor several additional species. Based on morphology and molecular data, we describe a new species of from east of the Guiana Shield, in Pará state, Brazil. The new species is characterized by having one of the biggest size of the genus (SVL of males 16.0-17.8 mm and females 22.9-24.4 mm), presence of a large palmar tubercle (occupying 2/4 of the palmar surface), 5.6-8.1% uncorrected -distance from its sister clade (including , sp.1, and ) for the 16S mitochondrial gene, and 8.8% for the COI. The new species described here represents a newly discovered lineage. Of the 12 species currently recognized, two were describe in the last century ( and ) and the remaining species were recently discovered and described (in the last six years), which underscores the degree to which species richness of is underestimated.
不同方法的结合已成功在许多传统上被归类为单一命名生物的新热带物种复合体中界定了新物种。最近的研究表明，目前由12个小型物种组成的亚马逊特有属可能还隐藏着几个其他物种。基于形态学和分子数据，我们描述了一种来自巴西帕拉州圭亚那地盾东部的新物种。该新物种的特征在于具有该属中最大的体型之一（雄性吻肛长为16.0 - 17.8毫米，雌性为22.9 - 24.4毫米），存在一个大的掌突（占据掌面的2/4），对于16S线粒体基因，与它的姐妹分支（包括 、 物种1和 ）的未校正距离为5.6 - 8.1%，对于细胞色素氧化酶亚基I（COI）为8.8%。这里描述的新物种代表了一个新发现的谱系。在目前公认的12个 物种中，有两个是在上个世纪描述的（ 和 ），其余物种是最近发现并描述的（在过去六年中），这突出了 物种丰富度被低估的程度。
