Metagonia spiders of Galápagos: blind cave-dwellers and their epigean relatives (Araneae, Pholcidae)

IF 1.9 2区生物学 Q3 EVOLUTIONARY BIOLOGY Invertebrate Systematics Pub Date : 2022-08-03 DOI:10.1071/IS21082

B. Huber, Guanliang Meng, A. Acurio, J. Astrin, Diego J. Inclán, M. Izquierdo, Alejandro Valdez-Mondragón

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引用次数: 2

Abstract

ABSTRACT The spider genus Metagonia has been represented on the Galápagos Islands by two blind species inhabiting lava tubes on Isabela and Santa Cruz. Epigean relatives had not been found on Galápagos and were thus thought to be extinct. During a collecting trip in 2019 we found two epigean species and a third blind hypogean species. Here we describe these new species based on males and females, redescribe both previously known species, and add all five species to the recently published molecular phylogeny of Pholcidae, together with more than 30 further congeners from the mainland. Galápagos Metagonia is recovered as a monophyletic group within the South American–Caribbean M. potiguar group. Galápagos Metagonia is divided into an epigean clade and a hypogean clade. Each species is restricted to an individual island (Isabela or Santa Cruz; with one possible exception), suggesting that the epigean Metagonia species are native rather than introduced. ZooBank registration: http://zoobank.org/References/0812B715-8446-4B28-BCE0-6AB504BBEC7E.

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Galápagos的Metagonia蜘蛛:穴居盲人及其近亲(蜘蛛目，蜘蛛科)

Metagonia蜘蛛属在Galápagos群岛上由两种生活在伊莎贝拉岛和圣克鲁斯岛熔岩管中的盲蛛所代表。在Galápagos上没有发现近亲，因此被认为已经灭绝了。在2019年的一次收集旅行中，我们发现了两个上古物种和第三个盲下古物种。在这里，我们根据雄性和雌性对这些新物种进行了描述，重新描述了这两个已知的物种，并将这五个物种添加到最近发表的phocidae分子系统发育中，以及来自大陆的30多个同系物。Galápagos Metagonia是南美洲-加勒比海m.p otiguar群中的一个单系群。Galápagos Metagonia分为上古枝和下古枝。每个物种都局限于一个单独的岛屿(伊莎贝拉或圣克鲁斯;除了一个可能的例外)，这表明上古Metagonia物种是本地的，而不是引进的。ZooBank注册:http://zoobank.org/References/0812B715-8446-4B28-BCE0-6AB504BBEC7E。

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来源期刊

Invertebrate Systematics 生物-动物学

CiteScore

4.30

自引率

9.10%

发文量

审稿时长

>12 weeks

期刊介绍： Invertebrate Systematics (formerly known as Invertebrate Taxonomy) is an international journal publishing original and significant contributions on the systematics, phylogeny and biogeography of all invertebrate taxa. Articles in the journal provide comprehensive treatments of clearly defined taxonomic groups, often emphasising their biodiversity patterns and/or biological aspects. The journal also includes contributions on the systematics of selected species that are of particular conservation, economic, medical or veterinary importance. Invertebrate Systematics is a vital resource globally for scientists, students, conservation biologists, environmental consultants and government policy advisors who are interested in terrestrial, freshwater and marine systems. Invertebrate Systematics is published with the endorsement of the Commonwealth Scientific and Industrial Research Organisation (CSIRO) and the Australian Academy of Science.