Ron Santiago R, Toral Eduardo, Venegas Pablo J, Barnes Charles W
Museo de Zoología, Escuela de Biología, Pontificia Universidad Católica del Ecuador, Av. 12 de Octubre y Roca, Aptdo. 17-01-2184, Quito, Ecuador.
Zookeys. 2010 Nov 29(70):67-92. doi: 10.3897/zookeys.70.765.
Osteocephalus festae is an Amazonian species recently resurrected from a synonymy with Osteocephalus buckleyi. Because few specimens are known, its morphological variation, diagnostic characters, and distribution are poorly understood. Herein we determine its phylogenetic relationships and provide a complete taxonomic account based on recently collected specimens (adults and larvae) from nine localities in Ecuador and Peru. Osteocephalus festae is most similar to Osteocephalus verruciger from which it differs in having less tuberculate dorsal skin on males, smaller tympanum, and more tooth rows in the oral disk of larvae. A phylogeny based on mitochondrial DNA sequences, genes 12S and ND1, shows that Osteocephalus festae is closely related to Osteocephalus buckleyi, Osteocephalus mutabor and Osteocephalus verruciger. A clade consisting of Osteocephalus festae, Osteocephalus verruciger, and Osteocephalus buckleyi is characterized by stream dwelling tadpoles. Surprisingly, we found paraphyly among Ecuadorian populations of Osteocephalus buckleyi and Osteocephalus verruciger. The causes for paraphyly are unknown but in Osteocephalus buckleyi may result from the existence of cryptic species.
费氏骨雨蛙是一种亚马逊地区的物种,最近从与巴克利骨雨蛙的同物异名中被重新划分出来。由于已知的标本很少,其形态变异、诊断特征和分布情况都了解甚少。在此,我们确定了它的系统发育关系,并基于最近从厄瓜多尔和秘鲁九个地点采集的标本(成体和幼体)提供了完整的分类描述。费氏骨雨蛙与疣背骨雨蛙最为相似,不同之处在于雄性的背部皮肤瘤较少、鼓膜较小,且幼体口盘的齿列更多。基于线粒体DNA序列(12S和ND1基因)的系统发育显示,费氏骨雨蛙与巴克利骨雨蛙、多变骨雨蛙和疣背骨雨蛙密切相关。由费氏骨雨蛙、疣背骨雨蛙和巴克利骨雨蛙组成的一个分支的特征是溪流栖息的蝌蚪。令人惊讶的是,我们发现厄瓜多尔的巴克利骨雨蛙和疣背骨雨蛙种群存在并系现象。并系现象的原因尚不清楚,但在巴克利骨雨蛙中可能是由于隐存种的存在。