Additions to Philippine slender skinks of the Brachymeles bonitae complex (Reptilia: Squamata: Scincidae) IV: Resurrection and redescription of Brachymeles burksi

Q3 Environmental Science
Cameron D. Siler, Elyse S. Freitas, J. Sheridan, Stephanie N. Maguire, Drew R. Davis, Jessa L. Watters, Kai Wang, A. Diesmos, Rafe M. Brown
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引用次数: 1

Abstract

The diversity of Philippine amphibians and reptiles has increased over the last few decades, in part due to re-evaluation of species formerly believed to be widespread. Many of these investigations of widespread species have uncovered multiple closely related cryptic lineages comprising species complexes, each restricted to individual Pleistocene Aggregate Island Complexes (PAICs). One group in particular for which widespread cryptic diversity has been common is the clade of Philippine skinks of the genus Brachymeles. Recent phylogenetic studies of the formerly recognized widespread species Brachymeles bonitae have indicated that this species is actually a complex distributed across several major PAICs and smaller island groups in the central and northern Philippines, with numerous species that exhibit an array of digit loss and limb reduction patterns. Despite the recent revisions to the B. bonitae species complex, studies suggest that unique cryptic lineages still exist within this group. In this paper, we resurrect the species Brachymeles burksi Taylor 1917, for a lineage of non-pentadactyl, semi-fossorial skink from Mindoro and Marinduque islands. First described in 1917, B. burksi was synonymized with B. bonitae in 1956, and has rarely been reconsidered since. Evaluation of genetic and morphological data (qualitative traits, meristic counts, and mensural measurements), and comparison of recently-obtained specimens to Taylor’s original description support this species’ recognition, as does its insular distribution on isolated islands in the central portions of the archipelago. Morphologically, B. burksi is differentiated from other members of the genus based on a suite of unique phenotypic characteristics, including a small body size, digitless limbs, a high number of presacral vertebrae, the absence of auricular openings, and discrete (non-overlapping) meristic scale counts. The recognition of this central Philippine species further increases the diversity of non-pentadactyl members of the B. bonitae complex, and reinforces the biogeographic uniqueness of the Mindoro faunal region.
菲律宾短肢龙复合体细长石龙的补充(爬行纲:鳞片目:剑齿科)IV:短肢龙的复活和重新描述
在过去的几十年里,菲律宾两栖动物和爬行动物的多样性有所增加,部分原因是对以前被认为分布广泛的物种进行了重新评估。许多对广泛分布物种的研究发现了由物种复合体组成的多个密切相关的隐谱系,每一个都局限于单个更新世聚合岛复合体(PAICs)。一个特别广泛的隐蔽多样性已经普遍存在的群体是菲律宾石龙子属的分支。最近对以前公认的广泛分布的物种Brachymeles bonitae的系统发育研究表明,该物种实际上是一个复杂的物种,分布在菲律宾中部和北部的几个主要的太平洋群岛和较小的岛屿群中,其中许多物种表现出一系列的手指损失和肢体减少模式。尽管最近对bonitae物种复合体进行了修订,但研究表明,在这一群体中仍然存在独特的隐谱系。在本文中,我们复活了Brachymeles burksi Taylor 1917,作为一个来自民都洛岛和马林杜克岛的非五肢类半化石石龙人的谱系。burksi于1917年首次被描述,1956年与B. bonitae同义,此后很少被重新考虑。对遗传和形态学数据(质量特征、分生数和测量)的评估,以及最近获得的标本与泰勒最初的描述的比较,都支持了对该物种的认识,以及它在群岛中部孤立岛屿上的岛屿分布。在形态学上,B. burksi根据一系列独特的表型特征与其他成员区分开来,包括小的体型,无指肢,大量的前骶椎骨,没有耳孔,离散(不重叠)分生鳞片计数。这一菲律宾中部物种的发现进一步增加了B. bonitae复合体的非五肢动物的多样性,并加强了民都洛动物区的生物地理独特性。
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来源期刊
Philippine Journal of Systematic Biology
Philippine Journal of Systematic Biology Environmental Science-Ecology
CiteScore
1.50
自引率
0.00%
发文量
0
期刊介绍: The Philippine Journal of Systematic Biology (Print ISSN: 1908-6865; Online ISSN: 2508-0342) is an annual, peer-reviewed journal in English that publishes high quality reports of original research and reviews in the field of Taxonomy & Systematics, Ecology and Conservation Biology. The PJSB is a CHED recognized journal under CHED CMO 50 series of 2017. It is also included in the Clavariate Analysis (formerly a subsidiary of Thomson Reuters) Master Journal List under Zoological Record, BIOSIS Previews and Biological Abstracts.The PJSB is the official publication of the Association of Systematic Biologists of the Philippines (SEC Registration: Association of Philippine Taxonomists, Inc.). The organization financially supports the journal and all its endeavors. The journal aims to build up quality information on animal, plant and microbial diversity in the Philippines. Articles dealing with original research or reviews in Zoological, Botanical or Microbial Systematics, Ecology and Conservation Biology are welcome. Authors are advised to consult a recent issue of PJSB for the current format and style. All manuscripts are reviewed by at least two qualified referees.
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