Chimena nantou, Lin & Li, 2022

Lin, Yucheng & Li, Shuqiang, 2022, Chimena gen. nov., a new spider genus (Araneae, Mysmenidae) from China, with descriptions of two new species and a new combination, ZooKeys 1125, pp. 69-86 : 69

Chimena nantou sp. nov.

Figs 7 , 8

Type material.

Holotype ♀ (IZCAS), China: Taiwan, Nantou County, Ren’ai Township, Songgang Village, 24°05.222'N, 121°10.335'E, 2067 m, 2.VII.2013, G. Zheng leg.

Etymology.

The new species is named after the type locality; noun in apposition.

Diagnosis.

Chimena nantou sp. nov. shares a similar configuration of the vulva to C. qiong sp. nov. and C. taiwanica comb. nov., but differs from the former by the shorter spermathecae with fewer spirals (longer and with more spirals in C. qiong ) (cf. Fig. 7E, F vs. Fig. 4I, J ), and from the latter by the more compact spermathecae (elongated in the latter) (cf. Fig. 7E, F vs. Fig. 6I, J ).

Description.

Female: Habitus as in Fig. 7A-C . Total length 0.75. Carapace 0.25 long, 0.23 wide. Clypeus 0.07 high. Sternum 0.24 long, 0.22 wide. Abdomen 0.45 long, 0.42 wide. Length of legs: I 0.98 (0.30, 0.13, 0.19, 0.14, 0.22); II 0.87 (0.27, 0.12, 0.17, 0.14, 0.18); III 0.66 (0.19, 0.09, 0.14, 0.14, 0.16); IV 0.80 (0.23, 0.10, 0.16, 0.15, 0.18). Somatic features as in female of C. taiwanica comb. nov.

Epigyne (Fig. 7D-F ): vulval configuration similar to C. qiong sp. nov. and C. taiwanica comb. nov. Genital area bears sparse setae, without a dark speckle. Spermathecae short, tapering at distal end and proximal base, separated by ca 1.1 × their length. Scape knob shaped, rugose, membranous. Copulatory ducts translucent. Most of fertilization ducts intertwined with spermathecae, distal part of fertilization ducts thin, inflected.

Male. Unknown.

Distribution.

China (Taiwan) (Fig. 8 ).

Figures

Figure 4. Chimena qiong sp. nov., male (A, B, E, F) and female (C, D, G-J) A, C habitus, dorsal B, D habitus, ventral E prosoma, front-lateral, F, G habitus, lateral H epigyne, ventral I vulva, ventral J vulva, dorsal. Abbreviations: CD copulatory ducts; CS cheliceral spines rooted at base; FD fertilization ducts; MN male metatarsal nodule at distal-prolaterally; MS male metatarsal clasping spine; S spermathecae; SP scape. Scale bars: 0.50 mm (A-D, F, G); 0.20 mm (E); 0.10 mm (H-J).

Figure 6. Chimena taiwanica (Ono, 2007) comb. nov., male (A, B, E, F) and female (C, D, G-J) A, C habitus, dorsal B, D habitus, ventral E prosoma, front-lateral F, G habitus, lateral H epigyne, ventral I vulva, ventral J vulva, dorsal. Abbreviations: CD copulatory ducts; CS cheliceral spines rooted at base; FD fertilization ducts; MS male metatarsal clasping spine; S spermathecae; SP scape. Scale bars: 0.50 mm (A-D, F, G); 0.20 mm (E); 0.10 mm (H-J).

Figure 7. Chimena nantou sp. nov., holotype female A habitus, dorsal B habitus, ventral C habitus, lateral D epigyne, ventral E vulva, ventral F vulva, dorsal. Abbreviations: CD copulatory ducts; FD fertilization ducts; S spermathecae; SP scape. Scale bars: 0.50 mm (A-C); 0.10 mm (D-F).

Figure 8. Distribution records of three Chimena spp.: C. qiong sp. nov. (red dot), C. taiwanica (green dot) and C. nantou sp. nov. (blue dot).