Femorbiona shenzhen
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Ordo: Araneae
Familia: Clubionidae
Genus: Femorbiona
Name
Femorbiona shenzhen Yu & Li sp. nov. – Wikispecies link – ZooBank link – Pensoft Profile
Type material
Holotype ♂ (IZCAS-Ar 34726), CHINA: Guangdong Province: Shenzhen: Meilin Reservoir, 22°34.365'N, 114°0.400'E, ca. 100 m, 01.XI.2020, Q. Lu. leg. Paratype: 1♀ (IZCAS-Ar 34727), same data as holotype.
Diagnosis
The male of F. shenzhen sp. nov. resembles that of F. phami sp. nov. (Figs 3A–E, 7B) by the embolus which consists of an enlarged base and needle-like apex (cf. Figs 5C–E, 7C and Figs 3C–E, 7B), but it differs by having: (1) the femoral apophysis finger shaped (Figs 5A, B, 7C) (vs. shaped like a short wing of a bird or dorsal fin of a fish, as in Fig. 3A, B); (2) in ventral view, the embolar apex pointed ventro-distally (Figs 5D, 7C) (vs. pointed prolatero-distally, as in Figs 3D, 7B). The female is similar to F. brachyptera (Zhu et al. 2012[1]: 53, figs. 6, 7, 11, 12; Fig. 2A–D) by the V-shaped epigynal hoods (cf. Fig. 2A, B and Fig. 6A, B), but it differs by having: (1) the copulatory ducts easily visible through the epigynal plate in ventral view (Fig. 6A, B) (vs. indistinct, as in Fig. 2A, B); (2) the dorsal part of the spermathecae not strongly convoluted, following a C-shaped course (Fig. 6C, D) (vs. strongly convoluted, following a double S-shaped course, as in Fig. 2C, D).
Description
Male. Holotype (Figs 6E, F, 8A). Total length 3.79; carapace 1.70 long, 1.22 wide; opisthosoma 2.09 long, 1.02 wide. Colour in life dark brown with red-grey abdomen (Fig. 8A). Carapace light brown in ethanol (Fig. 6E, F), darker anteriorly, without distinct pattern, fovea black; cephalic region distinctly narrowed, cervical groove and radial grooves indistinct; tegument smooth, clothed with short, fine setae. Eyes: both AER and PER slightly recurved in dorsal view, latter wider than former. Eye sizes and interdistances: AME 0.09, ALE 0.12, PME 0.12, PLE 0.12, AME–AME 0.07, AME–ALE 0.04, PME–PME 0.20, PME–PLE 0.09, MOQL 0.27, MOQA 0.24, MOQP 0.43. Chelicerae robust, dark brown, with six promarginal and four retromarginal teeth. Sternum yellowish white, 0.94 long, 0.62 wide. Labium and endites coloured as carapace. Legs coloured as sternum, without distinct markings. Leg measurements: I 3.59 (1.03, 1.51, 0.68, 0.36), II 4.19 (1.21, 1.75, 0.82, 0.41), III 3.26 (0.97, 1.17, 0.81, 0.31), IV 4.75 (1.43, 1.60, 1.29, 0.43). Abdomen elongate-oval, without pattern; dorsum greyish, anteriorly slightly darker; venter uniformly grey.
Palp (Figs 5A–E, 7C). Femur with finger-shaped retrolateral apophysis originating proximally, apophysis < 1/3 length of femur. Patella 2 × longer and 1.3 × wider than tibia, with round prolateral apophysis. Tibia with small, partly membranous ventral apophysis. Bulb inflated, sperm duct indistinct in ventral view. Embolus needle-like, relatively short, < 1/10 of tegulum length, originating distally on tegulum, gradually tapered toward tip, apex sharp, ventrally pointed; embolic base an enlarged tubercle. Female. Paratype (Figs 6G, H, 8B, C). Total length 2.86; carapace 1.39 long, 1.00 wide; opisthosoma 1.48 long, 0.97 wide. Eye sizes and interdistances: AME 0.06, ALE 0.09, PME 0.08, PLE 0.07, AME–AME 0.06, AME–ALE 0.06, PME–PME 0.15, PME–PLE 0.05, MOQL 0.23, MOQA 0.20, MOQP 0.32. Sternum 0.77 long, 0.50 wide. Leg measurements: I 2.52 (0.69, 1.04, 0.51, 0.28), II missing, III 2.48 (0.69, 1.00, 0.45, 0.34), IV 3.61 (1.09, 1.22, 1.01, 0.28). Similar to male but distinctly larger and lighter coloured. Epigyne (Fig. 6A–D). Epigynal plate distinctly wider than long, through which bursae and copulatory ducts are conspicuous. Hood located posteriorly on epigynal plate, ca. 1/3 of epigyne width, posterior margin heavily sclerotised, slightly procurved, V-shaped. Copulatory openings at lateral border of hood, separated by ca. 3 diameters. Copulatory ducts thick, short, covered by large spermathecae in dorsal view. Spermathecae long, tubular, sinuous, with uniform thickness throughout. Bursae reniform, large, close together, ca. 1.5 × longer than wide, surface translucent, smooth.
Distribution
Known only from the type locality, Shenzhen, Guangdong, China.
Etymology
The species name is derived from the type locality; noun in apposition.
Original Description
- Zhang, J; Yu, H; Li, S; 2021: Femorbiona gen. nov., a new genus of sac spiders (Araneae, Clubionidae) from Southeast Asia ZooKeys, 1052: 25-41. doi
Images
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Other References
- ↑ Zhu B, Ren H, Chen J (2012) A new species of the genus Clubiona Latreille (Araneae, Clubionidae) from Hainan Island, China.Zootaxa3167: 53–56. https://doi.org/10.11646/zootaxa.3167.1.5
