Provenzano R Francisco, Barriga-Salazar Ramiro
Departamento de Biología, Facultad de Ciencias, Escuela Politécnica Nacional, Quito Ecuador. Secretaría de Educación Superior, Ciencia, Tecnología e Innovación (SENESCYT), Quito, Ecuador.
Zootaxa. 2018 Dec 4;4527(2):211-238. doi: 10.11646/zootaxa.4527.2.4.
To elucidate the species of the genus Ancistrus that inhabit freshwater systems of Ecuador, cataloged lots of the Fish Collection, Museo de la Escuela Politécnica Nacional (MEPN), in Quito, were analyzed. Four species were identified: Ancistrus alga (Cope, 1872), A. malacops (Cope, 1872), A. clementinae Rendahl, 1937, and a new species that herein is described. Ancistrus clementinae inhabits aquatic systems of the Pacific slope, mostly in the Guayas River drainage. The other three species live in freshwater systems that drain to the Amazon River Basin. Ancistrus alga inhabit the northern and central portions of eastern Ecuador. Ancistrus malacops has a broad distribution from north to south, but is absent from the Santiago River. Both species occasionally live in sympatry. The new species is restricted to the Santiago River, in Morona-Santiago province. Each species has unique external morphological features and/or a coloration pattern that allow unambiguous identification, at least of males. This paper provides a description of the new species, and a re-description and images of the other three.
为了阐明栖息于厄瓜多尔淡水系统中的歧须鲶属物种，对基多国立理工学院博物馆（MEPN）鱼类收藏中的大量标本进行了分析。鉴定出了四个物种：阿尔加歧须鲶（Ancistrus alga，科普，1872年）、马拉科普歧须鲶（A. malacops，科普，1872年）、克莱门蒂娜歧须鲶（A. clementinae，伦达尔，1937年），以及本文描述的一个新物种。克莱门蒂娜歧须鲶栖息于太平洋沿岸的水系，主要在瓜亚斯河流域。其他三个物种生活在流入亚马逊河流域的淡水系统中。阿尔加歧须鲶栖息于厄瓜多尔东部的北部和中部地区。马拉科普歧须鲶分布广泛，从北到南均有，但圣地亚哥河没有该物种。这两个物种偶尔会同域分布。新物种局限于莫罗纳 - 圣地亚哥省的圣地亚哥河。每个物种都有独特的外部形态特征和/或颜色模式，至少对于雄性而言，能够进行明确鉴定。本文对新物种进行了描述，并对其他三个物种进行了重新描述并提供了图片。
