Clubiona mii Yu & Li, 2021

Zhang, Jianshuang, Yu, Hao & Li, Shuqiang, 2021, Taxonomic studies on the sac spider genus Clubiona (Araneae, Clubionidae) from Xishuangbanna Rainforest, China, ZooKeys 1034, pp. 1-163 : 1

Clubiona mii Yu & Li sp. nov. Figs 27 , 77A , 85A , 93A

Holotype

♀ (IZCAS-Ar 34758, YHCLU0065), China, Yunnan Province: Xishuangbanna: Mengla County: Nanshahe Village: monsoon forest, 21°36.388'N, 101°34.247'E, ca. 797 m, 13.VII.2012, Q.Y. Zhao and C.X. Gao leg.

Etymology.

This species is named after Mr. Xiaoqi Mi (Tongren City, China) who has helped us greatly with this research.

Diagnosis.

The female of the new species is easily distinguished from those of the other species in the group, with the exception of C. hystrix ( Deeleman-Reinhold 2001: 103, figs 17, 18), by the general shape of the vulva but can be recognised by the: (1) triangular epigynal ridge (Figs 27A-C , 77A , 85A ) (vs. pocket-like; Deeleman-Reinhold 2001 fig. 17); (2) copulatory openings close together (Figs 27A-C , 77A , 85A ) (vs. copulatory openings separated by one diameter; Deeleman-Reinhold 2001 fig. 17).

Description.

Female. Holotype (Fig. 27F, G ): total length 2.63; carapace 1.29 long, 0.99 wide; opisthosoma 1.34 long, 0.90 wide. Carapace light orange, darker anteriorly, without distinct pattern, pars cephalica slightly narrowed, cervical groove indistinguishable; tegument smooth, all setae detached in ethanol. Eyes: AER slightly recurved, PER slightly wider than AER, almost straight in dorsal view. Eye sizes and interdistances: AME 0.08, ALE 0.07, PME 0.07, PLE 0.06, AME-AME 0.04, AME-ALE 0.02, PME-PME 0.17, PME-PLE 0.05, MOQL 0.18, MOQA 0.22, MOQP 0.31. Chelicerae coloured as ocular area, with six promarginal and two retromarginal teeth. Sternum yellowish white, 1.38 long, 0.95 wide. Labium and endites coloured as chelicerae. Legs coloured as sternum, without markings. Leg measurements: I 1.84 (0.53, 0.73, 0.33, 0.25), II 1.98 (0.58, 0.77, 0.40, 0.23), III 1.81 (0.58, 0.59, 0.41, 0.22), IV 2.85 (0.83, 1.00, 0.71, 0.30). Abdomen yellowish white, uniformly coloured, clothed with dense setae, without pattern.

Epigyne (Figs 27A-E , 77A , 85A , 93A ). Epigynal plate slightly longer than wide, spermathecae and bursae prominently visible through integument in ventral view, posterior margin not rebordered. Copulatory openings small, contiguous, situated at medial portion of epigynal plate posterior margin, hidden in two transverse ridges in ventral view. Ridge represented by triangular sclerite. Copulatory ducts thick and straight, close together, ascending parallel, entering the connecting piece located inside of bursal surface, then continuing upward and turning sideways, finally connecting to anteriorly located spermathecae. Spermathecae globular, separated by one diameter. Fertilisation ducts small, acicular. Bursae oblong, large, approximately as long as copulatory ducts, separated by 0.5 × diameters, ca. 1.5 × longer than wide, with smooth surface.

Male. Unknown.

Comments.

According to WSC (2021), a total of seven described C. ternatensis group species are known only from males (See Table 4 ). Among them, C. bachmaensis , C. esuriens , and C. kuu were found form the adjacent area of Xishuangbanna. We cannot rule out the possibility that these three species are conspecific to C. mii sp. nov.

Distribution.

Known only from the type locality, Xishuangbanna, Yunnan, China.

Figures

Figure 27. Holotype female of Clubiona mii sp. nov., epigyne (A-E) and habitus (F, G) A intact, ventral view B cleared, ventral view C cleared, ventral view D cleared, dorsal view E cleared, dorsal view F dorsal view G ventral view. Abbreviations: BS = bursa; CD = copulatory duct; CO = copulatory opening; FD = fertilisation duct; R = epigynal ridge; SP = spermatheca. Scale bars: 0.1 mm (equal for A-E); 1 mm (equal for F, G).

Figure 77. Clubiona spp. of the C. ternatensis group (A-E) and the C. trivialis group (F), epigyne, intact, ventral view A C. mii sp. nov. holotype B C. subkuu C C. theoblicki D C. tongi E C. zhengi F C. bicornis. Abbreviations: A = atrium; CO = copulatory opening; R = epigynal ridge. Scale bars: 0.1 mm.

Figure 85. Clubiona spp. of the C. ternatensis group (A-E) and the C. trivialis group (F), epigyne, cleared, ventral view A C. mii sp. nov., holotype B C. subkuu C C. theoblicki D C. tongi E C. zhengi F C. bicornis. Abbreviations: A = atrium; CO = copulatory opening; R = epigynal ridge. Scale bars: 0.1 mm.

Figure 93. Clubiona spp. of the C. ternatensis group (A-E) and the C. trivialis group (F), vulva, cleared, dorsal view A C. mii sp. nov., holotype B C. subkuu C C. theoblicki D C. tongi E C. zhengi F C. bicornis. Abbreviations: BS = bursa; CD = copulatory duct; FD = fertilisation duct; SP = spermatheca. Scale bars: 0.1 mm.