Clubiona subcylindrata Wang, Chen & Zhang, 2018

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

Clubiona subcylindrata Wang, Chen & Zhang, 2018

Figs 3 , 4 , 7

Clubiona subcylindrata Wang et al. 2018: 328 , figs. 16A–C, 17A–D (♁). Holotype from Fanjing Mountain Reserve , Heiwanhe (27°50.778′N, 108°46.362′E; elev. 533 m), 26.IX.2013, L.Y. Wang, D. Wang & X.K. Jiang leg. (Museum of Hebei University, Baoding, China, examined by Luyu Wang).

New Records. 4♁ 5♀, CHINA: Hunan Province, Zhangjiajie City, Tianpingshan Nature Reserve , 29.76101°N, 110.04879°E, 551 m, 22.X.2014, J.H. Gan et al. leg. (HNU-HN-X-1417) .

Diagnosis. The males of Clubiona s ubcylindrata resemble those of C. cylindrata Liu et al., 2007 (see Liu et al. 2007: figs 13–15) in having a bulged tegulum and a slender embolus, but can be distinguished by: (1) the RTA finger-shaped with abruptly sharpened tip in retrolateral view ( Fig. 3E ) (vs. spinous in C. cylindrata ); (2) the sperm duct invisible in ventral view ( Fig. 3D ) (vs. visible in C. cylindrata ). The females of this species resemble those of C. cylindrata Liu et al., 2007 (see Liu et al. 2007: figs 11, 12) and C. lyriformis Song & Zhu, 1991 (see Song et al. 1991: fig. 4A, B) in having twisted tubular spermathecae, but can be distinguished by: (1) the anterior portion of atrium slightly wider than posterior portion ( Fig. 4C ) (vs. the anterior portion of atrium about half width of posterior portion in C. cylindrata ); (2) the posterior margin of atrium opened ( Fig. 4C ) (vs. enclosed in C. lyriformis ).

Description. Male (one of HNU-HN-X-1417) ( Fig. 3A, B ). Total length 7.34. Carapace 3.19 long, 2.33 wide; abdomen 4.24 long, 2.03 wide. Carapace yellow, fovea reddish and longitudinal, cervical and radial grooves conspicuous. Eyes: AER slightly recurved, PER almost straight in dorsal view. Eye sizes and interdistances: AME 0.16, ALE 0.18, PME 0.14, PLE 0.15, AME–AME 0.12, AME–ALE 0.06, PME–PME 0.28, PME–PLE 0.15, ALE–PLE 0.08. MOQL 0.46, MOQA 0.52, MOQP 0.72. Chelicerae yellow with five promarginal teeth and two retromarginal teeth. Endites and labium yellowish brown. Sternum yellowish, almost oval. Legs yellow; tibiae I and II with two pairs of ventral spines, metatarsus I and II with one pair of ventral spines. Leg measurements: I 8.74 (2.46, 3.54, 1.80, 0.94), II 10.29 (2.87, 4.18, 2.23, 1.01), III 7.55 (2.28, 2.61, 1.96, 0.70), IV 10.65 (2.93, 3.59, 3.26, 0.87). Abdomen elongate oval, dorsum yellow with conspicuous tufts of hairs anteriorly and two pairs of muscular depressions, venter light yellow with four rows of dots medianly. Spinneret yellow.

Palp ( Figs. 3C–G ) Femur and patella without apophysis. Tibia and patella longer than wide, about 1/2 length of cymbium. Tibia with two apophyses; VTA shorter with blunt tip, RTA longer than VTA, finger-shaped with abruptly sharpened tip. Cymbium longer than wide. Tegulum strongly bulged, posterior margin extended to patella. Conductor membranous and leaf-shaped, arising from the top of tegulum. Embolus slender and flagelliform, arising from the middle and prolateral side of tegulum. Sperm duct invisible in ventral view.

Female (one of HNU-HN-X-1417) ( Figs. 4A, B ). Total length 8.51. Carapace 3.67 long, 2.57 wide; abdomen 4.70 long, 2.83 wide. Eye sizes and interdistances: AME 0.17, ALE 0.19, PME 0.15, PLE 0.17, AME–AME 0.16, AME–ALE 0.08, PME–PME 0.40, PME–PLE 0.13, ALE–PLE 0.10. MOQL 0.46, MOQA 0.53, MOQP 0.73. Leg measurements: I 8.20 (2.46, 3.35, 1.52, 0.87), II 8.42 (2.46, 3.39, 1.68, 0.89), III 7.08 (2.13, 2.40, 1.90, 0.65), IV 10.06 (2.92, 3.54, 2.78, 0.82). Colors and patterns same as in male.

Epigyne ( Fig. 4C, D ). Epigynal plate almost rounded. Atrium almost calabash-shaped, longer than wide, and located anteriorly; posterior margin opened. Copulatory openings located at the posterolateral margin of atrium. Copulatory ducts semicircular. Spermathecae slender, tubular. Bursae oval. Fertilization ducts short and curved.

Distribution. Guizhou and Hunan Provinces of China ( Fig. 7 ).

Figures

FIGURE 3. Clubiona subcylindrata Wang, Chen & Zhang, 2018, male: 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; G conductor, ventral view. Abbreviations: C = conductor; E = embolus; RTA = retrolateral tibial apophysis; VTA = ventral tibial apophysis.

FIGURE 4. Clubiona subcylindrata Wang, Chen & Zhang, 2018, female: 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.