Clubiona zhaoi 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 zhaoi Yu & Li sp. nov. Figs 24 , 74B , 82B , 90B

Holotype.

♀ (IZCAS-Ar 34755), China, Yunnan Province: Xishuangbanna: Mengla County: Xiaolongha Village: biodiversity preservation corridor, 21°24.798'N, 101°37.880'E, ca. 693 m, 28.VI.2012, Q.Y. Zhao and C.X. Gao leg. Other material examined. 1♀ (YHCLU0086), same locality, same time, and same collectors as holotype, 21°24.408'N, 101°37.827'E, ca. 662 m.

Etymology.

The specific name is a patronym after Qingyuan Zhao (Beijing City, China), collector of several specimens examined in this study.

Diagnosis.

Females of the new species are easily distinguished from others in the species group, with the exception for C. altissimoides ( Liu et al. 2007: 65, figs 6, 7), by the similarly shaped atria and the general shape of the endogyne. Clubiona zhaoi sp. nov. can be separated from C. altissimoides by the copulatory openings located at the anterior atrial margins (Figs 24A-C , 74B , 82B ) (vs. located at the underside of the atrium; Liu et al. 2007: fig. 6) and by having the spermathecae distinctly smaller than the bursae (Figs 24D, E , 90B ) (vs. larger; Liu et al. 2007: fig. 7).

Description.

Female. Holotype (Fig. 24F, G ): Total length 5.82; carapace 2.80 long, 1.98 wide; opisthosoma 3.02 long, 1.65 wide. Carapace light brown except dark brown ocular area, without distinct pattern; fovea dark; cephalic region distinctly narrowed, cervical groove distinct, radial grooves inconspicuous; tegument smooth, clothed with short, fine setae. Eyes: AER slightly recurved, PER slightly wider than AER, almost straight in dorsal view. Eye sizes and interdistances: AME 0.11, ALE 0.15, PME 0.12, PLE 0.08, AME-AME 0.11, AME-ALE 0.08, PME-PME 0.32, PME-PLE 0.19, MOQL 0.39, MOQA 0.37, MOQP 0.59. Chelicerae robust and brownish red, both margins with four teeth. Sternum yellowish brown, 1.38 long, 0.95 wide. Labium and endites coloured as carapace. Legs yellowish, without distinct markings. Leg measurements: I - (1.58, -, -, -), II 6.60 (1.89, 2.52, 1.38, 0.81), III 5.29 (1.64, 1.69, 1.43, 0.53), IV - (-, -, 1.17, -). Abdomen long, oval, dorsally grey with dense setae and a lengthwise white heart mark, reaching posterior half; with a pair of muscle depressions located at distal part of heart mark; venter off-white.

Epigyne (Figs 24A-E , 74B , 82B , 90B ). Epigynal plate nearly as broad as long, spermathecae and bursae indistinctly visible through integument. Atrium small, ca. 1/4 of epigyne width, with M-shaped anterior margin (or hood), without posterior margin. Copulatory openings small but distinct, circular, located on anterior part of atrium. Copulatory ducts indistinct. Spermathecae consisting of fan-shaped proximal part and convoluted distal part, with small fertilisation ducts terminally; the two spermathecae separated by 0.8 diameters. Bursae oval, close together, ca. 1.4 × longer than wide, surface translucent and wrinkled.

Male. Unknown.

Distribution.

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

Figures

Figure 24. Holotype female of Clubiona zhaoi 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: A = atrium; BS = bursa; CO = copulatory opening; FD = fertilisation duct; SP = spermatheca. Scale bars: 0.2 mm (equal for A-E); 1 mm (equal for F, G).

Figure 74. Clubiona spp. of the C. corticalis group, epigyne, intact, ventral view A C. xiaokong sp. nov., holotype B C. zhaoi sp. nov., holotype C C. kai D C. tiane E C. didentata F C. subdidentata sp. nov., holotype. Abbreviations: A = atrium; AM = atrial membrane; CO = copulatory opening. Scale bars: 0.2 mm.

Figure 82. Clubiona spp. of the C. corticalis group, epigyne, cleared, ventral view A C. xiaokong sp. nov., holotype B C. zhaoi sp. nov., holotype C C. kai D C. tiane E C. didentata F C. subdidentata sp. nov., holotype. Abbreviations: A = atrium; AM = atrial membrane; CO = copulatory opening. Scale bars: 0.2 mm.

Figure 90. Clubiona spp. of the C. corticalis group, vulva, cleared, dorsal view A C. xiaokong sp. nov., holotype B C. zhaoi sp. nov., holotype C C. kai D C. tiane E C. didentata F C. subdidentata sp. nov., holotype. Abbreviations: BS = bursa; CD = copulatory duct; FD = fertilisation duct; SH = spermathecal head; SP = spermatheca. Scale bars: 0.2 mm.