Phylogenetic placement of eight poorly known spiders of Microdipoena (Araneae, Mysmenidae), with descriptions of five new species Author Zhang, Qiuqiu Key Laboratory Bio-resources and Eco-environment (Ministry of Education), College of Life Sciences, Sichuan University, Chengdu 610065, China Author Lin, Yucheng https://orcid.org/0000-0002-5054-0633 Key Laboratory Bio-resources and Eco-environment (Ministry of Education), College of Life Sciences, Sichuan University, Chengdu 610065, China linyucheng@scu.edu.cn text ZooKeys 2023 2023-08-21 1175 333 373 http://dx.doi.org/10.3897/zookeys.1175.90920 journal article http://dx.doi.org/10.3897/zookeys.1175.90920 1313-2970-1175-333 FEC00B35F13943A49B2659058949472E 39F73AB80DC3569B8E7E77DFC199DBF9 Microdipoena huisun sp. nov. Fig. 10 Type material. Holotype ♀ and paratype 4♀ (NHMSU-TW03), China : Taiwan Province, Nantou County, Huisun Forest Farm ( 24°05.279'N , 121°02.078'E ; 788 m elev.), 1.VII.2013, G. Zheng leg. Etymology. The specific name is derived from the type locality; noun in apposition. Diagnosis. This new species differs from other species except for M. gongi , M. ogatai , and M. yinae by the nearly spherical spermathecae and having a small scape rather than a long, soft, membranous one (cf. Figs 10E, F , 13C , 14F , 17C ). It can be distinguished from M. gongi , M. ogatai , and M. yinae by the nearly spherical spermathecae and the narrower posterior sclerotized area of copulatory ducts (cf. Figs 10F , 9F , 19H and Ono 2007 : fig. 70). Figure 10. Microdipoena huisun sp. nov., female from Taiwan of China A habitus, dorsal B habitus, ventral C habitus, lateral D epigyne, ventral E vulva, ventral F vulva, dorsal. Abbreviations: CD = copulatory duct, S = spermathecal, Sp = Scape. Scale bars: 0.50 mm ( A-C ), 0.10 mm ( D-F ). Description. Female (holotype) : Total length 0.76. Carapace 0.28 long, 0.29 wide, 0.28 high. Clypeus 0.07 high. Sternum 0.24 long, 0.19 wide. Abdomen 0.48 long, 0.48 wide, 0.50 high. Length of legs: I 0.94 (0.30, 0.08, 0.22, 0.16, 0.18); II 0.92 (0.32, 0.08, 0.22, 0.14, 0.16); III 0.70 (0.22, 0.08, 0.14, 0.12, 0.14); IV 0.94 (0.24, 0.08, 0.24, 0.18, 0.20). Somatic characters (Fig. 10A-C ). Coloration : carapace nearly silver-brown centrally, black marginally. Ocular base black. Chelicera, endites yellow, labium silver-brown, sternum pale yellow with four symmetrical black spots. Legs brown-black. Abdomen black with multiple symmetrical white spots dorsally, black with symmetrical white and yellow spots ventrally. Prosoma : carapace nearly pear-shaped in dorsal view. Cephalic part unraised. Sternum triangular, covered with sparse setae. Legs : covered with setae and bristles. Femurs I and II with sclerotized femoral spot. Abdomen : nearly oval in dorsal view, covered with sparse setae. Epigyne (Fig. 10D-F ): scape nodular shape, very small. Copulatory duct membranous, coiled under the spermathecae. Paired spermathecae nearly globose, separated by nearly 3 x its diameter. Fertilization ducts membranous, inconspicuous. Male. Unknown. Distribution. China (Taiwan).