Clubiona tianpingshan, Li & Liu & Li & Peng, 2023

Li, Li-Fen, Liu, Ping, Li, Bing & Peng, Xian-Jin, 2023, Two new species of the sac-spider genus Clubiona Latreille, 1804 (Araneae, Clubionidae) and the female of C. subcylindrata from China, Zootaxa 5263 (4), pp. 520-530 : 524-528

Clubiona tianpingshan sp. nov.

Figs 5–7

Type material. Holotype: ♁, CHINA: Hunan Province, Zhangjiajie City, Tianpingshan Nature Reserve , 29.79004°N, 110.09161°E, 1442 m, 23.X.2014, J.H. Gan, Y.H. Gong, C. Wang & B. Zhou leg. (HNU-HN-X-1418) . Paratypes: 1♀, same data as holotype (HNU-HN-X-1418); 2 ♁ 2♀, Tianpingshan Nature Reserve , 29.77190°N, 110.06751°E, 1348 m, 24.X.2014, J.H. Gan et al. leg. (HNU-HN-X-1419) .

Etymology. The specific epithet comes from the type locality, noun.

Diagnosis. The males of Clubiona tianpingshan sp. nov. resemble those of C. huiming Wang et al., 2018 (see Wang et al. 2018: figs 8, 9) in having helical embolus and simple RTA and VTA, but can be distinguished by: (1) the embolic base about 1/3 width of the tegulum in ventral view ( Fig. 5D ) (vs. about 1/6 width of the tegulum in C. huiming ); (2) the conductor arising from the anterior 1/3 of the tegulum and the terminal portion above the top of tegulum in retrolateral view ( Fig. 5E ) (vs. arising from the median portion of the tegulum and its terminal portion below the top of tegulum in C. huiming ). The females of the new species resemble those of C. applanata Liu et al., 2007 (see Liu et al. 2007: figs 1, 2) and C. subapplanata Wang , et al., 2018 (see Wang et al. 2018: figs 14C, D, 15E, F) in having an oval atrium located anteriorly, a pair of large bursae and a pair of spermathecae with two chambers, but can be distinguished from the two species by (1) the margin of atrium thinner and posterior margin W-shaped in ventral view ( Fig. 6C ) (vs. thicker and rounded posteriorly in C. applanate and C. subapplanata ); (2) the copulatory duct longer and twisted into two circular loops in dorsal view ( Fig. 6D ) (vs. shorter in C. applanate and C. subapplanata ); (3) the posterior tubular chambers of spermathecae extended vertically in dorsal view ( Fig. 6D ) (vs. extended transversely in C. applanate and C. subapplanata ).

Description. Male (holotype) ( Fig. 5A, B ). Total length 3.85; carapace 1.80 long, 1.24 wide; abdomen 2.07 long, 1.29 wide. Carapace yellow; fovea reddish and longitudinal, cervical and radial grooves inconspicuous. Eyes: AER and PER slightly recurved in dorsal view. Eye sizes and interdistances: AME 0.08, ALE 0.11, PME 0.09, PLE 0.10, AME–AME 0.04, AME–ALE 0.03, PME–PME 0.11, PME–PLE 0.06, ALE–PLE 0.04, MOQL 0.27, MOQA 0.22, MOQP 0.37. Chelicerae yellow, each margin with five teeth. Endites and Labium yellowish brown. Sternum yellowish, almost oval. Legs yellowish; tibiae I and II with three pairs of ventral spines, metatarsus I and II with two pairs of ventral spines. Leg measurements: I 4.20 (1.28, 1.65, 0.75, 0.52), II 4.30 (1.34, 1.60, 0.89, 0.47), III 3.84 (1.17, 1.32, 0.93, 0.41), IV 5.46 (1.68, 1.84, 1.44, 0.50). Abdomen oval, dorsum light yellow, with conspicuous tufts of hairs anteriorly, and two pairs of muscular depressions, venter light yellow. Spinneret yellow.

Palp ( Fig. 5C–F ). Femur without apophysis. Patella wider than long in dorsal view, with a thumb-shaped retroapical apophysis. Tibia shorter and narrower than patella, about 1/3 length of cymbium, with three apophyses; RTA sclerotized and flat, almost triangular with pointed tip in retrolateral view; VTA smaller than RTA, triangular with blunt tip; LTA smallest and with blunt tip. Cymbium longer than wide. Tegulum enlarged and protruded, slightly longer than wide. Conductor beak-shaped with sharp apices, located retrolaterally and arising distally from the 1/3 portion of tegulum in retrolateral view. Embolus arising from the top of tegulum, helical and extended anticlockwise, basal portion about 1/3 wide of tegulum, distal portion filiform. Sperm duct U-shaped in ventral view.

Female (HNU-HN-1418) ( Fig. 6A, B ). Total length 4.23; carapace 1.88 long, 1.37 wide; abdomen 2.37 long, 1.40 wide. Eye sizes and interdistances: AME 0.08, ALE 0.12, PME 0.11, PLE 0.11, AME–AME 0.06, AME–ALE 0.03, PME–PME 0.19, PME–PLE 0.10, ALE–PLE 0.08, MOQL 0.31, MOQA 0.23, MOQP 0.40. Leg measurements: I 3.96 (1.21, 1.58, 0.75, 0.42), II 4.07 (1.29, 1.67, 0.73, 0.38), III 3.65 (1.06, 1.33, 0.89, 0.37), IV 5.05 (1.52, 1.70, 1.36, 0.47). Colors and patterns same as in male.

Epigyne ( Fig. 6C, D ). Epigynal plate almost rounded. Atrium almost oval, wider than long, about 3/5 width of epigyne, located anteriorly, posterior margin thickened and W-shaped. Copulatory openings located in the posterior margin of atrium. Copulatory ducts twisted into two circular loops. Spermathecae meso-laterally located with two chambers respectively; anterior chamber globular, posterior chamber tubular and extended vertically. Bursae almost globular, located posteriorly. Fertilization ducts short and curved.

Distribution. Known only from the type locality ( Fig. 7 ).

Figures

FIGURE 5. Clubiona tianpingshan sp. nov., male holotype: A habitus, dorsal view; B ditto, ventral view; C left palp, prolateral view; D ditto, ventral view; E ditto, retrolateral view; F ditto, dorsal view. Abbreviations: C = conductor; E = embolus; LTA = lateral tibial apophysis; RTA = retrolateral tibial apophysis; VTA = ventral tibial apophysis.

FIGURE 6. Clubiona tianpingshan sp. nov., female paratype:A, habitus, dorsal view; B ditto, ventral view. C epigyne, ventral view; D vulva, dorsal view. Abreviations: At = atrium; Bs = bursa; CD = copulatory duct; CO = copulatory opening; FD = fertilization ducts; Sp = spermathecae.

FIGURE 7. Collection localities of Clubiona flammaforma sp. nov., Clubiona subcylindrata Wang, Chen & Zhang, 2018, and Clubiona tianpingshan sp. nov.