Programa de Pós-Graduação em Biologia Animal, Departamento de Zoologia, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil.
AQUAREC, Laboratorio de Biología y Genética Molecular, Instituto de Investigaciones de la Amazonia Peruana, Iquitos, Loreto, Peru.
PLoS One. 2023 Jul 12;18(7):e0287120. doi: 10.1371/journal.pone.0287120. eCollection 2023.
Rhyacoglanis pulcher is a rare Neotropical rheophilic bumblebee catfish known only from the type locality in the Cis-Andean Amazon region, Ecuador, and the type-species of the genus. So far, the three syntypes collected in 1880 were the only specimens unambiguously associated to the name R. pulcher available in scientific collections. Recently, a specimen was discovered in a fast-flowing stretch of the Villano river, a tributary of the Curaray river, Napo river basin, Ecuador, representing a new record after nearly 140 years. Here, we present this new record, identified by morphology, provide the DNA barcode sequence of the specimen, and propose why the species of Rhyacoglanis are scarce in zoological collections. Additionally, we discuss the intraspecific variation in the color pattern observed in R. pulcher.
华丽彩虹鳅是一种稀有的新热带急流洞穴泥蜂鲶鱼，仅知分布于厄瓜多尔安第斯山脉北部的类型产地，也是该属的模式种。到目前为止，1880 年采集的三个模式标本是唯一可明确与 R. pulcher 名称相关的标本，这些标本保存在科学收藏中。最近，在厄瓜多尔纳波河支流维拉诺河的急流段发现了一个标本，这是近 140 年来的一个新记录。在这里，我们介绍了这个新记录，通过形态学进行了鉴定，提供了标本的 DNA 条码序列，并提出了为什么 Rhyacoglanis 物种在动物学收藏中如此稀少的原因。此外，我们还讨论了 R. pulcher 观察到的颜色模式的种内变异。
