An Amazonian hidden gem: a new metallic-colored species of Ranitomeya (Anura, Dendrobatidae) from Juruá River basin forests, Amazonas state, Brazil.

IF 1.3 3区 生物学 Q2 ZOOLOGY
ZooKeys Pub Date : 2025-04-25 eCollection Date: 2025-01-01 DOI:10.3897/zookeys.1236.146533
Alexander Tamanini Mônico, Esteban Diego Koch, Jussara Santos Dayrell, Jiří Moravec, Albertina Pimentel Lima
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Abstract

The genus Ranitomeya has 16 known species, and the last of them was described 13 years ago. The forests of the Juruá River basin are known for their enormous vertebrate diversity, despite being one of the least sampled regions in the entire Amazonia. Our recent expeditions to the region resulted in the discovery of a Ranitomeya species with blue-green dorsal stripes and quite peculiar behavior. Here, it is described as a new species using morphological, morphometric, advertisement call, natural history, and genetic data. This new species is strongly nested within the R.vanzolinii clade, with interspecific p-distances ranging from 2.94 to 3.91%, and it was confirmed in all the delimitation methods used. It differs from its closest relatives mainly by (i) its size (male SVL 15.4-17.7 mm, n = 8; female SVL 17.3-18.5 mm, n = 5), (ii) its unique color pattern that is metallic pale yellowish green to metallic pale turquoise-green dorsal stripes pattern, limbs metallic chrome with dark carmine spotting), (iii) presence of a conspicuous sulfur yellow spot on the dorsal surface of the thighs, (iv) tadpoles with posterior tooth rows P1 > P2 > P3 in all stages, head translucent brownish and lack of emarginate lateral papillae, and (v) its advertisement call (composed of 21-45 notes, call duration of 647-1,424 ms, note rate of 28-36 notes/s and dominant frequency of 4,996-6,288 Hz).

An亚马逊隐藏的宝石:来自巴西亚马逊州juru河流域森林的一种新的金属色Ranitomeya(无尾目,石斛科)。
Ranitomeya属已知有16种,其中最后一种是在13年前被描述的。juru河流域的森林以其巨大的脊椎动物多样性而闻名,尽管它是整个亚马逊流域中样本最少的地区之一。我们最近对这一地区的考察,发现了一种蓝绿色背条纹和非常奇特行为的拉尼托米亚鱼。本文利用形态学、形态计量学、广告鸣叫、自然史和遗传资料,将其描述为新种。该新种紧密嵌套在R.vanzolinii分支中,种间p距离在2.94 ~ 3.91%之间,所有划分方法均证实了该新种的存在。它与近亲的区别主要在于(1)大小(雄性SVL 15.4-17.7 mm, n = 8;女性SVL 17.3 - -18.5毫米,n = 5),(2)其独特的颜色模式,是金属淡黄绿色金属苍白绿松石绿背条纹模式,四肢金属铬黑胭脂发现),(3)存在明显的硫黄点背表面的大腿,与后牙(iv)蝌蚪行P1 > P2 > P3在所有阶段,半透明的褐色和缺乏顶端微凹的侧乳头状突起,及其广告(v)调用(由21-45指出,通话时长为647 ~ 1424 ms,音符速率为28 ~ 36个音符/s,主频为4996 ~ 6288 Hz)。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
ZooKeys
ZooKeys 生物-动物学
CiteScore
2.70
自引率
15.40%
发文量
400
审稿时长
3 months
期刊介绍: ZooKeys is a peer-reviewed, open-access, online and print, rapidly produced journal launched to support free exchange of ideas and information in systematic zoology, phylogeny and biogeography. All papers can be freely copied, downloaded, printed and distributed at no charge. Authors and readers are thus encouraged to post the pdf files of published papers on homepages or elsewhere to expedite distribution. There is no charge for color.
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