Department of Life Science, National Taiwan Normal University, No. 88, Sec. 4, Tingzhou Rd., Taipei 11677, Taiwan Zoology Division, Taiwan Endemic Species Research Institute, No. 1, Minsheng E. Rd., Jiji Township, Nantou 55244, Taiwan..
Zootaxa. 2021 Feb 11;4927(1):zootaxa.4927.1.4. doi: 10.11646/zootaxa.4927.1.4.
This study revised the spider genus Oxyopes Latreille, 1804 in Taiwan and delineated the species boundaries based on morphological and molecular characters. A total of seven Oxyopes spiders were recognized, including two newly described species, O. hasta sp. nov. and O. taiwanensis sp. nov. Oxyopes fujianicus Song Zhu 1993 from Yilan County, Nantou County, and Kaohsuing City, and O. striagatus Song 1999 from New Taipei City, Taichung City, Nantou County, and Kaohsiung City were recorded for the first time in Taiwan. An identification key and a distributional map of Taiwanese Oxyopes species were provided. Partial COI sequences were obtained for molecular phylogenetic and species delimitation analyses. Maximum likelihood and Bayesian phylogenies, and DNA barcoding gap analysis supported morphologically defined species. However, molecular species delimitation based on Automatic Barcode Gap Discovery (ABGD), PID (Liberal), and generalized mixed Yule coalescent (GMYC) were incongruent in species assignment. The results showed that the interspecific genetic divergence between O. sertatus and O. taiwanensis was relatively low (1.28 ± 0.43%), and the intraspecific genetic divergence of O. striagatus was relatively high (1.69 ± 0.35%). Ecological data, additional samples and genetic loci are required to further examine the level of reproductive isolation and patterns of population genetic structure in Taiwanese Oxyopes.
本研究修订了台湾的 Oxyopes Latreille, 1804 属蜘蛛，并基于形态和分子特征划定了物种界限。共鉴定出 7 种 Oxyopes 蜘蛛，包括 2 个新描述的物种，即 O. hasta sp. nov. 和 O. taiwanensis sp. nov. 来自宜兰县、南投县和高雄市的 O. fujianicus Song Zhu 1993，以及来自新北市、台中市、南投县和高雄市的 O. striagatus Song 1999，在台湾均为首次记录。提供了台湾 Oxyopes 物种的鉴别特征和分布地图。获得了部分 COI 序列，用于分子系统发育和物种界定分析。最大似然和贝叶斯系统发育以及 DNA 条形码间隙分析支持形态定义的物种。然而，基于自动条形码间隙发现 (ABGD)、PID (Liberal) 和广义混合尤尔凝聚 (GMYC) 的分子物种界定在物种分配上不一致。结果表明，O. sertatus 和 O. taiwanensis 之间的种间遗传分化相对较低（1.28 ± 0.43%），而 O. striagatus 的种内遗传分化相对较高（1.69 ± 0.35%）。需要生态数据、额外的样本和遗传标记来进一步研究台湾 Oxyopes 种间的生殖隔离水平和种群遗传结构模式。
