A new species of the spider genus Solenysa from China (Araneae, Linyphiidae)
A new species of the spider genus Solenysa from China (Araneae, Linyphiidae)
复制标题
中国蜘蛛属Solenysa一新种（蜘蛛亚科，蜘蛛科）
DOI：
10.11646/zootaxa.4531.1.10
复制
发表时间：
2018
期刊：
影响因子：
0.9
通讯作者：
Lihong Tu
中科院分区：
文献类型：
--
作者：
Jiahui Tian;Lihong Tu
Solenysa Simon属，1894年，隶属于Linyphiidae Blackwall， 1859年，这是一个物种丰富的类群，包括608属，4571种（世界蜘蛛目录2018）。Solenysa目前包括来自中国、日本和朝鲜半岛的14个物种（Simon 1894; Namkung 1986; Li & Song 1992; Gao, Zhu & Sha 1993; Tu, Ono & Li 2007; Ono 2011; Tu & Hormiga 2011; Wang, Ono & Tu 2015）。基于分子数据的林蝇系统发育表明，螺线管属是林蝇科7个主要分支之一（Wang et al. 2015）。Tu和Hormiga（2011）根据形态学数据进行系统发育分析，将索理萨属分为4个种群，每个种群都有由一系列生殖特征组成的独特生殖类型。作为一个具有悠久进化史的古老分支，螺线绳蛛已经积累了一长串的突触形态（Tu & Hormiga 2011），不仅具有独特的躯体外观，而且具有与所有其他螺线绳蛛区分开来的特定生殖器特征。在最近对中国四川省博物馆藏品的调查中，我们发现了一个新的物种，它的躯体未来与其他物种相似，但生殖器特征不同。在本研究中，我们描述了一个新种；提供了其生殖器形态的详细插图。此外，我们还比较了新种与其他已知种的体细胞特征和生殖特征，并讨论了新种的位置及其与同系物的关系。使用徕卡MZ205A立体显微镜对标本进行检测。在徕卡DM5500B复合显微镜下研究进一步的细节。左男性触须；用细针打破连接门上骨与根的膜柱，切除栓塞；将上咽从女性身上剥离，用沸水氢氧化钠溶液清除。为了在复合显微镜下检查生殖结构，雄性触须和上咽浸泡在75%的乙醇中；在霍耶氏液中进一步安装栓塞分区和上咽。所有插图均采用拔管在复合显微镜下绘制。腿部测量按以下顺序给出：全（股骨、髌骨+胫骨、跖骨、跗骨）。体细胞形态和生殖特征的术语遵循Tu和Hormiga（2011）。研究材料存放在中国科学院动物研究所，北京（中国）。我们要感谢埃弗顿内·洛pes·罗德里格斯和古斯塔沃·霍米加对本文早期版本的评论。自然科学基金项目（NSFC-31572244）资助。
The genus Solenysa Simon, 1894 belongs to Linyphiidae Blackwall, 1859, which is a species-rich group, including 608 genera and 4,571 species (World Spider Catalog 2018). Solenysa currently includes 14 species from China, Japan and the Korean Peninsula (Simon 1894; Namkung 1986; Li & Song 1992; Gao, Zhu & Sha 1993; Tu, Ono & Li 2007; Ono 2011; Tu & Hormiga 2011; Wang, Ono & Tu 2015). The linyphiid phylogeny based on molecular data shows that Solenysa species forms one of the seven main clades within Linyphiidae (Wang et al. 2015). According to the phylogenetic analysis based on morphological data, Tu and Hormiga (2011) divided the genus Solenysa into four species groups, each having a unique genital type comprised by series genital characters. As an old branch with a long evolutionary history, Solenysa spiders have accumulated a long list of synapomorphies (Tu & Hormiga 2011), not only having a unique somatic appearance, but also specific genitalic characters that distinguish them from all other linyphiids. During a recent examination of the museum collections of linyphiids from Sichuan Province, China, we found a new species of similar somatic futures with, but different genital characters from other Solenysa species. In the present study, we describe a new species; detailed illustrations of its genital morphology are provided. Furthermore, we compare the somatic features and genital characters of the new species to other known species of the genus Solenysa, and discuss the placement of the new species and its relationships with congeners. Specimens were examined using a Leica MZ205A stereomicroscope. Further details were studied under a Leica DM5500B compound microscope. Left male palp was depicted; the embolic division was excised by breaking the membranous column connecting the suprategulum to the radix with a fine needle; the epigynum was dissected from the female body and cleared in boiling NaOH solution. For examination of the genital structures under a compound microscope, the male palp and epigynum were immersed in 75% ethanol; the embolic division and epigynum were further mounted in Hoyer’s solution. All illustrations were made under the compound microscope by using a drawing tube. The leg measurements are given in the following sequence: total (femur, patella+ tibia, metatarsus, tarsus). Terminology for the somatic morphology and genital characters follows Tu and Hormiga (2011). The materials studied are deposited in the Institute of Zoology, Chinese Academy of Sciences, Beijing (China). We would like to thank Everton Nei Lopes Rodrigues and Gustavo Hormiga for kindly providing comments on an earlier version of this paper. This work is supported by the Natural Sciences Foundation, China (NSFC-31572244).