Acosta-Galvis Andrés R, Vargas-Ramírez Mario, Anganoy-Criollo Marvin, Ibarra Oscar A, Gonzáles Sandra
Colecciones Biológicas, Subdirección de Investigaciones, Instituto de Investigación de Recursos Biológicos Alexander von Humboldt, Carrera 8 No 15-08, Claustro de San Agustín, Villa de Leyva, Boyacá, Colombia South América..
Zootaxa. 2020 Mar 27;4758(1):zootaxa.4758.1.3. doi: 10.11646/zootaxa.4758.1.3.
Using different sources of evidence (i.e., integrative taxonomy), we describe a new species of Hyloxalus, Hyloxalus arliensis sp. nov. The new species occurs in the middle Magdalena River valley on slopes between the Cordillera Central and Cordillera Oriental of the Andes of Colombia. Previously, the new species was referred to as Hyloxalus "Ibagué" but was not formally described. Phylogenetic re-analyses of 2440 base pairs (bp) of mitochondrial DNA (mtDNA), revealed the species to be a sister taxon of H. lehmanni, within a monophyletic clade also comprising H. delatorreae lineage 1, H. pulchellus and H. vertebralis. The adult males of H. arliensis sp. nov. have a pale arm gland, which differentiates it from all other species of the genus, except for H. saltarius. The new species also differs from other species of Hyloxalus by its smaller size, disc on Finger III not expanded, toes unwebbed, dorsolateral stripe absent, oblique lateral stripe present, white spots on ventrolateral flanks in life and cloacal tubercles absent. The advertisement call consists of long trains of a single note repeated at a rate of 89-132 notes/min with a dominant frequency ranging from 4808-6387 Hz. The new species is a tiny frog that inhabits the sheltered areas around streams in sub-Andean forests. Aspects of its natural history are described.
我们利用不同的证据来源（即综合分类学），描述了箭毒蛙属的一个新物种——阿里箭毒蛙（Hyloxalus arliensis sp. nov.）。该新物种分布于哥伦比亚安第斯山脉中科迪勒拉山脉中央和东方山脉之间斜坡上的马格达莱纳河中游流域。此前，这个新物种被称为箭毒蛙属的“伊瓦格”，但未被正式描述。对线粒体DNA（mtDNA）的2440个碱基对（bp）进行系统发育重新分析后发现，该物种是莱氏箭毒蛙（H. lehmanni）的姐妹分类单元，属于一个单系类群，该类群还包括德氏箭毒蛙谱系1（H. delatorreae lineage 1）、美丽箭毒蛙（H. pulchellus）和脊椎箭毒蛙（H. vertebralis）。阿里箭毒蛙新物种的成年雄性有一个浅色的臂腺，这使其有别于该属的所有其他物种，除了盐生箭毒蛙（H. saltarius）。该新物种与箭毒蛙属的其他物种的区别还在于其体型较小、第三指上的圆盘不扩展、脚趾无蹼、没有背外侧条纹、有斜向外侧条纹、活体时腹侧有白色斑点且没有泄殖腔瘤。其求偶鸣叫由一连串单一音符组成，重复频率为每分钟89 - 132个音符，主频范围为4808 - 6387赫兹。这个新物种是一种小型蛙类，栖息于安第斯山脉低地森林溪流周围的隐蔽区域。文中描述了其自然史的各个方面。
