Three new species of mouse spider (Araneae: Actinopodidae: Missulena Walckenaer, 1805) from Western Australia, including an assessment of intraspecific variability in a widespread species from the arid biome

IF 1.5 2区 农林科学 Q2 ENTOMOLOGY Arthropod Systematics & Phylogeny Pub Date : 2021-10-11 DOI:10.3897/asp.79.e62332
Marleen R. Greenberg, J. Huey, V. Framenau, D. Harms
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引用次数: 1

Abstract

Abstract Mouse spiders (genus Missulena Walckenaer, 1805) are a lineage of trapdoor spiders with males of many species having a brightly coloured red cephalic region, an abdomen that is tinged metallic blue, and the habit of wandering during the day in search of a mate. A total of 17 species of Missulena have been described in Australia to date but most descriptions are based exclusively on males and always small numbers of specimens. Here, we describe three new species of Missulena from the Pilbara and Goldfields regions of Western Australia based on morphology and genetic data: Missulena davidisp. nov. (male and female), M. iugumsp. nov. (male) and M. manningensissp. nov. (male). One of them is presently known only from its type locality and another one from a small range based on two specimens but M. davidi sp. nov. has a linear range of almost 300 km and is genetically highly structured. We use genetic data for 75 specimens as a foundation to evaluate morphological variability in this species and note substantial variation in several characters commonly used to identify species such as body size, colouration, rastellum shape and eye distances. This variation does not necessarily relate to phylogeographic structure as inferred from the genetic data, but rather seems to reflect natural variability both within and between localised populations. Overall, our results stress the need to evaluate a large series of specimens for mygalomorph taxonomy and provide an interesting example of intraspecific variability in hard-to-collect species that are usually underrepresented in museum collections.
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来自西澳大利亚的三种新的鼠蛛(蜘蛛目:放线足科:Missulena Walckenaer,1805),包括对干旱生物群落中一个广泛物种的种内变异性的评估
摘要鼠蛛(Missulena Walckenaer属,1805)是活板门蜘蛛的一个谱系,许多物种的雄性头部区域颜色鲜艳,腹部呈金属蓝色,白天有四处游荡寻找配偶的习惯。迄今为止,澳大利亚共有17种米苏兰属物种被描述,但大多数描述都是基于雄性,而且总是少量的标本。在这里,我们根据形态学和遗传学数据描述了来自西澳大利亚皮尔巴拉和金田地区的三个新的米苏拉属物种:戴维斯米苏拉。nov.(雄性和雌性),M.iugumsp。nov.(雄性)和M.manningensisp。11月(男)。其中一个目前仅从其模式位置已知,另一个从基于两个标本的小范围已知,但M.davidi sp.nov.的线性范围几乎为300km,并且在遗传上高度结构化。我们使用75个标本的遗传数据作为评估该物种形态变异性的基础,并注意到常用于识别物种的几个特征的显著变化,如体型、颜色、光栅形状和眼睛距离。这种变异并不一定与从遗传数据推断的系统地理结构有关,而是似乎反映了局部种群内部和之间的自然变异。总的来说,我们的研究结果强调了评估一系列mygalomorph分类学标本的必要性,并提供了一个有趣的例子,说明难以收集的物种的种内变异性,这些物种在博物馆收藏中通常代表性不足。
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来源期刊
Arthropod Systematics & Phylogeny
Arthropod Systematics & Phylogeny Agricultural and Biological Sciences-Insect Science
CiteScore
2.50
自引率
5.60%
发文量
26
审稿时长
12 weeks
期刊介绍: Arthropod Systematics & Phylogeny releases three times per year. Research fields covered are the taxonomy, morphology/anatomy, phylogeny (molecular or morphology-based), historical biogeography and palaeontology of arthropod taxa. Arthropod Systematics & Phylogeny is the successor of Entomologische Abhandlungen, formerly published by the Museum of Zoology Dresden, Germany.
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