Macrothele nanning
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Ordo: Araneae
Familia: Macrothelidae
Genus: Macrothele
Name
Macrothele nanning Lin & Li sp. nov. – Wikispecies link – ZooBank link – Pensoft Profile
Type material
Holotype: 1♂ (IZCAS-Ar41869) China, Guangxi Zhuang Autonomous Region, Nanning, Suxu Town, Mu Village, Shibaluohan Cave, 22.5433°N, 108.0565°E, elevation ca 190 m, 09.V.2015, Zhigang Chen & Yunchun Li leg. Paratypes: 5♀ (IZCAS-Ar41870–Ar41874), same data as holotype.
Etymology
The species epithet refers to the type locality; noun in apposition.
Diagnosis
Males of Macrothele nanning sp. nov. resemble M. multispine by having blunt spines in lateral and dorsal views of palpal tibia and similar palpal bulb morphology, and females of the new species are similar to others by the apically globose receptacula bent inwards apically. Male of M. nanning sp. nov. can be distinguished from M. multispine by having the tibia with eight blunt spines in prolateral view and seven in dorsal view, the blunt spines extending onto patella (vs three blunt spines in prolateral view and one in dorsal view and blunt spines absent from patella). Females can be differentiated from M. multispine by the short, robust copulatory ducts and receptacula expanded basally (vs copulatory ducts long and narrow and receptacula base unexpanded).
Description
Male (holotype) (Figs 11, 12B, C, 13C, 14C): total length 12.63, carapace 5.30 long, 5.26 wide; opisthosoma 7.31 long, 4.17 wide. Carapace dark brown, covered with short setae, middle of cephalic region with row of setae. Fovea deep, round. AER slightly procurved, PER recurved. Eye sizes and interdistances: AME 0.25, ALE 0.47, PME 0.26, PLE 0.28; AME–AME 0.14, ALE–AME 0.06, ALE–PLE 0.56, PLE–PME 0.04, PME–PME 0.44. Cheliceral promargin with 11 stout teeth, basomesally with 17 denticles. Labium brown, with ca 17 cuspules; sternum chestnut, with three pairs of sigillae. Legs dark brown. Leg measurements: I 16.61 (4.49 + 5.77 + 3.91 + 2.44), II 17.30 (4.99 + 5.64 + 4.23 + 2.44), III 16.48 (4.17 + 5.13 + 4.74 + 2.44), IV 20.64 (5.06 + 6.73 + 6.09 + 2.76). Leg formula: 4231. Abdomen dark brown, hairy. Spinnerets: PMS one segment, 1.02 long, 0.24 wide, PMS–PMS 0.99; PLS three segments. PLS 3.94 long (2.45, 2.20, 2.78). Male palp (Figs 11, 13C, 14C). Maxillae with ca 43 cuspules. Palpal trochanter without lyral spines. Patella with three blunt spines; tibia with blunt spines, eight in prolateral view and seven in dorsal view. Bulb nearly globose; embolus slightly curved, needle shaped, and expanded at base.
Female (Fig. 12A, D, E): total length 17.08, carapace 7.12 long, 6.09 wide; opisthosoma 9.81 long, 6.86 wide. Eye sizes and interdistances: AME 0.23, ALE 0.50, PME 0.22, PLE 0.41; AME–AME 0.20, ALE–AME 0.12, ALE–PLE 0.08, PME–PME 0.64, PLE–PME 0.04. Cheliceral promargin with 13 stout teeth, basomesally with 22 denticles. Endites brown, labium with ca 30 cuspules. Leg measurements: I 18.28 (6.09 + 6.41 + 3.65 + 2.13), II 15.57 (5.00 + 5.45 + 2.88 + 2.24), III 21.26 (4.81 +5.00 + 4.10 + 2.37), IV 20.51 (5.45 + 7.18 + 5.32 + 2.56). Leg formula: 4132. Abdomen dark brown, hairy. Spinnerets: PMS one segment, 1.76 long, 0.49 wide, PMS–PMS 1.72; PLS three segments. PLS 7.81 long (2.36, 2.38, 3.06). Female genitalia (Fig. 12A) simple. Receptacula apically oval; copulatory ducts short and robust, expanded; the ratio of the length of the receptacula apically to the length of the copulatory duct is almost 1:4.
Variation
Female total length 12.43–17.08 (n = 5).
Distribution
China (Guangxi).
Original Description
- Lin, Y; Yan, X; Li, S; Ballarin, F; Chen, H; 2021: Five new species of Macrothele Ausserer, 1871 from China (Araneae, Macrothelidae) ZooKeys, 1052: 1-23. doi
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