Fouquet Antoine, Ferrão Miquéias, Jairam Rawien
Laboratoire Evolution et Diversité Biologique; UMR 5174; CNRS; IRD; Université Paul Sabatier; Bâtiment 4R1 31062 cedex 9; 118 Route de Narbonne; 31077 Toulouse; France.
Museum of Comparative Zoology; Harvard University; Cambridge; MA; 02138; USA.
Zootaxa. 2023 Jun 6;5297(4):533-561. doi: 10.11646/zootaxa.5297.4.4.
The actual diversity of anurans occurring in Amazonia remains only partly described. This is notably the case of the species of the genus Allobates despite a fast rate of species description in this genus during the last decade. This increasing taxonomic effort has been particularly facilitated by the availability of DNA sequences throughout the region. These data suggest for instance the existence of three lineages in the Guiana Shield that may correspond to unnamed species. We examined morphology and calls of these putative species and compared them to related nominal species, which confirmed that two of these lineages not only differ genetically but also morphologically and bioacoustically. These two species are thus named and described herein. Allobates vicinus sp. nov. from northern Suriname forms a clade with another candidate species from southern Suriname and Northern Pará, (Brazil) and with A. granti that occurs in French Guiana. Allobates ripicolus sp. nov. occurs throughout the eastern Guiana Shield and is nested within the A. tapajos complex which otherwise occurs in southeastern Amazonia and comprises A. tapajos and A. kamilae, along with three additional candidate species.
亚马逊地区实际出现的无尾目动物的多样性仍只是部分得到描述。尽管在过去十年里该属物种的描述速度很快，但Allobates属的情况尤其如此。整个地区DNA序列的可获得性特别有助于这种分类学研究工作的增加。例如，这些数据表明在圭亚那地盾存在三个谱系，可能对应未命名的物种。我们研究了这些假定物种的形态和叫声，并将它们与相关的命名物种进行比较，这证实其中两个谱系不仅在基因上不同，而且在形态和生物声学上也不同。因此，这两个物种在此被命名和描述。来自苏里南北部的Allobates vicinus sp. nov.与来自苏里南南部和巴西帕拉州北部的另一个候选物种以及出现在法属圭亚那的A. granti形成一个进化枝。Allobates ripicolus sp. nov.分布于圭亚那地盾东部各地，嵌套在A. tapajos复合体中，该复合体其他物种分布在亚马逊东南部，包括A. tapajos和A. kamilae，以及另外三个候选物种。
