Institut de Recerca de la Biodiversitat (IRBio) and Departament de Biologia Evolutiva, Ecologia i Cincies Ambientals. Facultat de Biologia. Universitat de Barcelona. Av. Diagonal, 643. 08028Barcelona, Spain..
Zootaxa. 2021 Nov 24;5071(3):326-348. doi: 10.11646/zootaxa.5071.3.2.
The aim of this paper is to describe a new species of the genus Loxosceles Heineken Lowe, 1832 from Morocco, Loxosceles imazighen sp. n., and to describe for the first time a female of Loxoxceles mrazig Ribera Planas, 2009 from Tunisia. Both species live in xeric and desert environments and are located in southern Atlas Range. Molecular phylogenetic analyses, using mitochondrial (cox1, 16S) and nuclear (H3, 28S) markers, revel that these species are closely related and that they constitute a separate evolutionary lineage of L. rufescens (Dufour, 1820) and of the set of endemic species of the Canary Islands. L. imazighen sp. n. differs from L. mrazig, the closest species morphologically and geographically, in the shapes and proportions of the male palpal tibia and the shapes and dispositions of the female seminal receptacles. In addition, L. mrazig females show morphological variability in their genitalia, mainly in the inner and outer lobes. Although that variability cannot be associated with different populations, since it also appears within individual populations, and is not related to genetic or geographic distances.
本文旨在描述摩洛哥一新种狼蛛属（Loxosceles Heineken Lowe，1832）物种，即伊玛兹格狼蛛（Loxosceles imazighen sp. n.），并首次描述来自突尼斯的拉比里纳·普拉纳斯狼蛛（Loxoxceles mrazig Ribera Planas，2009）的雌性个体。这两个物种均生活在干旱和沙漠环境中，位于南部阿特拉斯山脉。基于线粒体（cox1、16S）和核（H3、28S）标记的分子系统发育分析表明，这些物种密切相关，构成了与 L. rufescens（Dufour，1820）和加那利群岛特有物种组相分离的进化谱系。雄性触肢胫节和雌性受精囊的形状和比例使伊玛兹格狼蛛新种与形态和地理上最接近的拉比里纳·普拉纳斯狼蛛不同。此外，拉比里纳·普拉纳斯狼蛛的雌性个体在生殖器上存在形态变异性，主要表现在内、外叶上。尽管这种变异性不能与不同的种群相关联，因为它也出现在单个种群内，且与遗传或地理距离无关。
