Sinopoda dehiscens, Zhong & Jäger & Chen & Liu, 2019

Zhong, Yang, Jäger, Peter, Chen, Jian & Liu, Jie, 2019, Taxonomic study of Sinopoda spiders from China (Araneae: Sparassidae), Zootaxa 4607 (1), pp. 1-81 : 28

Sinopoda dehiscens sp. nov.

Figs 20–21 , 62

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Type material. Holotype female: CHINA: Hunan Province: Huaihua City, Mayang County, Pantian Village , 27.63°N, 109.64°E, 558 m, near road, 24 April 2016, Y. Zhong, Y. Zhu & H. Zhang leg. (CBEE). Paratype: 1 female, with same data as holotype ( CBEE) .

Etymology. The specific epithet is a Latin participle, dehiscens , meaning “dehiscent” referring to the dehiscent anterior part of internal ducts.

Diagnosis. This new species resembles S. erromena sp. nov. ( Figs 22 A–B, 23A–B) in having similarly shaped epigynal structures including a small triangular posteriad projection covering the anterior part of the lobal septum as well as a similar configuration of the internal duct system especially the anterior part with the way the glandular appendages are bent, but can be separated by: 1. Vulva with glandular appendages as wide as posterior parts of spermathecae (distinctly wider in S. erromena sp. nov.); 2. Vulva with posterior parts of spermathecae distinctly swollen (slightly swollen in S. erromena sp. nov.) ( Figs 20 A–B, 21A–B).

Description. Female (holotype): Measurements: PL 6.0, PW 5.3; AW 3.2; OL 6.6, OW 4.2. Eyes: AME 0.21, ALE 0.39, PME 0.26, PLE 0.39, AME–AME 0.25, AME–ALE 0.12, PME–PME 0.38, PME–PLE 0.48, AME–PME 0.41, ALE–PLE 0.40, CH AME 0.27, CH ALE 0.40. Spination: Palp: 131, 101, 2121, 1014; Fe: I–III 323, IV 331; Pa: I–IV 001; Ti: I–IV 2026; Mt: I–II 0 0 0 4, III 1014, IV 3036. Measurements of palp and legs: Palp 7.9 (2.6, 0.9, 1.7, –, 2.7); I 21.0 (6.0, 2.4, 5.6, 5.2, 1.8); II 22.2 (6.6, 2.5, 6.1, 5.4, 1.6); III 18.4 (5.6, 1.9, 5.0, 4.3, 1.6); IV 20.5 (6.0, 1.8, 5.5, 5.4, 1.8). Leg formula: II-IV-I-III. Cheliceral furrow with 3 anterior, 4 posterior teeth and ca. 22 denticles.

Copulatory organ as in diagnosis. Epigynal field wider than long, with short anterior bands and one slit sensillum on each side of the epigynal field. Lateral lobes fused. Lobal septum wide, forming a triangle. Fertilization ducts arising posterio-laterally. Membranous sac between fertilization ducts almost rectangular ( Figs 20 A–B, 21A–B).

Colouration in ethanol. Dorsal prosoma yellow-brown, posterior part covered by dark hairs. Fovea reddishbrown and radial furrows distinctly marked. Labium and gnathocoxae yellowish-brown, both with distal parts lighter. Sternum yellowish-brown. Chelicerae deep reddish-brown. Legs yellowish-brown with dark spots. Dorsal opisthosoma reddish-brown, covered by grey hairs, heart patch and muscle sigilla yellow, two thirds of opisthosoma with three pairs of black patches. Ventral opisthosoma yellow-brown ( Figs 21 C–D).

Distribution. China (Hunan) ( Fig. 62 ).

Figures

FIGURES 20. Sinopoda dehiscens sp. nov., holotype female from Pantian Village. A Epigyne, ventral; B Vulva, dorsal. ABanterior bands, FD—fertilization duct, GA—glandular appendage, LL—lateral lobes, LS—lobal septum, MS—membranous sac, PP—posterior part of spermathecae, SS—slit sensillum. Scale bars: 0.5 mm.

FIGURES 21. Sinopoda dehiscens sp. nov., holotype female from Pantian Village. A Epigyne, ventral; B Vulva, dorsal; C–D Female habitus (C dorsal, D ventral). Scale bars: A–B 0.5 mm; C–D 2 mm.

FIGURES 22. Sinopoda erromena sp. nov., holotype female from Liubuxi National Nature Reserve. A Epigyne, ventral; B Vulva, dorsal. AB—anterior bands, FD—fertilization duct, GA—glandular appendage, LL—lateral lobes, LS—lobal septum, MS—membranous sac, PP—posterior part of spermathecae. Scale bars: 0.5 mm.

FIGURES 62. Locality records for twenty-two species of Sinopoda: 1. S. abstrusa sp. nov. (Xizang); 2. S. aequalis sp. nov. (Henan); 3. S. apiculiformis sp. nov. (Hunan); 4, 5. S. brevis sp. nov. (Liaoning); 6, 7. S. changde sp. nov. (Hunan, Shaanxi); 8. S. columnaris sp. nov. (Guizhou); 9. S. curva sp. nov. (Guangxi); 10. S. dehiscens sp. nov. (Hunan); 11. S. erromena sp. nov. (Hunan); 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24. S. globosa Zhang et al., 2015 (Guizhou, Henan, Shaanxi, Sichuan, Yunnan); 25, 26. S. improcera sp. nov. (Yunnan); 27. S. lata sp. nov. (Yunnan); 28. S. liui Zhong et al., 2017 (Fujian); 14, 29, 30. S. longiducta Zhang et al., 2015 (Sichuan, Yunnan); 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41. S. longshan Yin et al., 2000 (Guizhou, Hubei, Hunan); 42, 43. S. luyui sp. nov. (Sichuan, Gansu); 44, 45. S. ovata sp. nov. (Chongqing); 14, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56. S. pengi Song & Zhu, 1999 (Yunnan); 57. S. pyramidalis sp. nov. (Sichuan); 58, 59. S. tumefacta sp. nov. (Yunnan); 14, 26, 29, 30. S. yaanensis sp. nov. (Sichuan, Yunnan); 60. S. yanlingensis sp. nov. (Hunan).