Microdipoena lisu, Zhang & Lin, 2023

Zhang, Qiuqiu & Lin, Yucheng, 2023, Phylogenetic placement of eight poorly known spiders of Microdipoena (Araneae, Mysmenidae), with descriptions of five new species, ZooKeys 1175, pp. 333-373 : 333

Microdipoena lisu sp. nov.

Fig. 14

Type material.

Holotype ♀ and paratype 1♀ (NHMSU-Glg83), China: Yunnan Prov., Gongshan Co., Bingzhongluo Town, halfway from Bingzhongluo to Puhuasi Temple, leaf litter in roadside native forest (28°01.420'N, 098°36.133'E, 1867 m elev.), 15.VIII.2018, Y. Lin et al. leg.

Etymology.

The new species is named after the Lisu people, an ethnic minority mainly living in the Nujiang River basin in Yunnan Prov.; noun in apposition.

Diagnosis.

The new species seems similar to M. jobi and M. pseudojobi in the configuration of the vulva and having a long, soft, membranous scape, but can be distinguished by the subtle difference in the shape of the spermathecae, the ca 3 × spacing of the spermathecae, and the copulatory duct enters spermatheca from the posterolateral position (cf. Figs 14E, F , 13B, C and Lin and Li 2008: fig. 12F).

Description.

Female (holotype): Total length 1.16. Carapace 0.48 long, 0.44 wide, 0.42 high. Clypeus 0.08 high. Sternum 0.24 long, 0.20 wide. Abdomen 0.68 long, 0.54 wide, 0.60 high. Length of legs: I 1.30 (0.46, 0.18, 0.21, 0.17, 0.28); II 1.26 (0.32, 0.18, 0.24, 0.23, 0.29); III 0.80 (0.20, 0.15, 0.18, 0.16, 0.21); IV 1.24 (0.29, 0.15, 0.28, 0.22, 0.30).

Somatic features

(Fig. 14A-C ): Body fulvous. Abdomen with irregular paler patches of all sizes. A bright yellow longitudinal stripe at middle line of sternum. Legs pale yellow, with darkish pigment. Carapace pear-shaped. Ocular base black. Eight eyes in two rows. AME black, the rest white. AER procurved, PER straight. Lateral eyes adjacent. Mouthparts pale brown. Labium fused to sternum. Sternum heart-shaped, longer than wide. Femoral spot on legs I and II. Abdomen dorsally short, ovate, posterior integument slightly ridged.

Epigyne (Fig. 14D-F ): epigynal area dark, inner structures not visible. Scape long, membranous, slender, ridged, with tiny notch at tip. Most of copulatory ducts membranous, rugose, with weakly sclerotized duct distally, entering from ventral side of spermathecae. Sclerotized, ovoid spermathecae separated by ca 3 × their width. Fertilization ducts translucent, membranous, arising from posteromedial side of spermathecae, distally intertwined with membranous parts of copulatory ducts.

Male. Unknown.

Distribution.

China (Gongshan Co., Yunnan).

Figures

Figure 13. Microdipoena jobi Kraus, 1967 from Georgia A epigyne, ventral B vulva, ventral C vulva, dorsal. Abbreviations: CD = copulatory duct, FD = fertilization duct, S = spermathecal, Sp = Scape. Scale bars: 0.10 mm.

Figure 14. Microdipoena lisu sp. nov., female from Yunnan of China A habitus, dorsal B habitus, ventral C habitus, lateral D epigyne, ventral E vulva, ventral F vulva, dorsal. Abbreviations: CD = copulatory duct, FD = fertilization duct, S = spermathecal, Sp = Scape. Scale bars: 0.50 mm (A-C); 0.10 mm (D-F).