Sinopoda improcera, 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 : 35-39

Sinopoda improcera sp. nov.

Figs 26–28 , 62

urn:lsid:zoobank.org:act:7D16F43A-FEE4-48FE-B214-A72F38D08381

Type material. Holotype male: CHINA: Yunnan Province: Tengchong County, Ruidian Town, Yunfengshan Scenic Area , 25.38°N, 98.42°E, 1897 m, near road, 10 June 2014, Y. Zhong & X.W. Cao leg. (CBEE) Paratypes: 1 male and 7 females ( CBEE) , 1 male and 1 female ( SMF) , with same data as holotype ; 7 females, Tengchong County, Houqiao Town , Danzha Village , Langya Mountain, 25.49°N, 98.27°E, 2032 m, near road, 11 June 2014, Y. Zhong & X.W. Cao leg. ( CBEE) .

Etymology. The specific name is derived from the Latin adjective improcerus, - a, - um, meaning among others “nanoid” referring to the internal ducts being very small.

Diagnosis. This new species resembles Sinopoda anguina Liu, Li & Jäger, 2008 ( Liu et al., 2008: figs 1A–G; Zhong et al., 2017: figs 3A–F, 4A–E) in having the embolus tip shorter than embolic apophysis and straight margins of lobal septum roughly forming a triangle in the median epigyne, but can be distinguished from the latter by the following characters: 1. Embolus tip with small hook-shaped apophysis in this new species, but not in S. anguina (blue arrow in Fig. 26B ); 2. Embolic apophysis distally with distinct hook-shaped apophysis in ventral view (smaller in S. anguina ); 3. Female epigyne with lobal septum moderately large, occupying about half epigyne in this new species, but signicantly large, occupying about two thirds of epigyne in S. anguina ; 4. Vulva with internal duct system stout, wider than long in this new species, but longer than wide in S. anguina .

Description. Male (holotype): Measurements: PL 6.4, PW 5.7; AW 2.7; OL 6.7, OW 3.9. Eyes: AME 0.35, ALE 0.44, PME 0.40, PLE 0.48, AME–AME 0.22, AME–ALE 0.06, PME–PME 0.27, PME–PLE 0.64, AME–PME 0.40, ALE–PLE 0.45, CH AME 0.18, CH ALE 0.25. Spination: Palp: 131, 101, 2121; Fe: I–III 323, IV 321; Pa: I–IV 101; Ti: I–III 2326, IV 2226; Mt: I–II 1014, III–IV 3036. Measurements of palp and legs: Palp 10.8 (3.3, 1.4, 2.1, –, 4.0); I 36.9 (9.5, 3.1, 10.3, 10.9, 3.1); II 40.1 (10.2, 2.9, 11.6, 12.2, 3.2); III 30.5 (8.2, 2.3, 8.7, 8.8, 2.5); IV 33.3 (8.8, 2.2, 9.1, 10.2, 3.0). Leg formula: II-I-IV-III. Cheliceral furrow with 3 anterior, 4 posterior teeth and ca. 16 denticles.

Palp as in diagnosis. Cymbium distinctly longer than tibia. Embolus tip slightly shorter than embolic apophysis.

Tegulum covering only small part of proximal embolus. Spermophor almost straight in ventral view. RTA arising distally to medially from tibia with distinct brush of stiff hairs, vRTA well developed, blunt in lateral view ( Figs 26 A–C, 27A–D).

Colouration in ethanol. Dorsal prosoma deep yellowish-brown, lateral margins dark, with yellow submarginal transversal light band posteriorly. Fovea and radial furrows distinctly marked. Labium and gnathocoxae yellowish-brown, both with distal parts brighter. Sternum yellowish-brown, with margin brown. Chelicerae deep reddishbrown. Legs yellowish-brown with dark spots. Dorsal opisthosoma reddish-brown, covered by gray hairs, lateral field of opisthosoma with three pairs of black patches. Ventral opisthosoma yellow-brown with irregular pattern ( Figs 27 E–F).

Female: Measurements: PL 7.1, PW 6.6;AW 3.8; OL 8.2, OW 4.7. Eyes:AME 0.37, ALE 0.50, PME 0.37, PLE 0.57, AME–AME 0.29, AME–ALE 0.12, PME–PME 0.47, PME–PLE 0.77, AME–PME 0.55, ALE–PLE 0.57, CH AME 0.21, CH ALE 0.28. Spination: Palp: 131, 101, 2121, 1014; Fe: I–III 323, IV 321; Pa: I–IV 101; Ti: I–II 2026, III–IV 2126; Mt: I–II 1014, III 2026, IV 3036. Measurements of palp and legs: Palp 8.0 (2.5, 1.1, 1.7, –, 2.7); I 25.7 (7.0, 2.2, 7.6, 6.5, 2.4); II 28.5 (8.3, 2.9, 8.3, 7.0, 2.0); III 24.4 (7.3, 2.5, 6.7, 5.9, 2.0); IV 25.4 (7.4, 2.2, 7.0, 6.6, 2.2). Leg formula: II-I-IV-III. Cheliceral furrow with 3 anterior, 4 posterior teeth and ca. 18 denticles.

Copulatory organ as in diagnosis. Epigynal field wider than long, with short anterior bands. Lateral lobes fused, with median incision. Lobal septum wide. Internal duct system of posterior part strongly diverging. Glandular appendages almost laterad. Fertilization ducts arising posterioly. Membranous sac between fertilization ducts almost rectangular ( Figs 26 D–E, 28A–B).

Colouration in ethanol. As in males, but dorsal opisthosoma and ventral opisthosoma slightly brighter than in males ( Figs 28 C–D).

Distribution. China (Yunnan) ( Fig. 62 ).

Figures

FIGURES 26. Sinopoda improcera sp. nov., holotype male and paratype female from Yunfengshan ScenicArea.A–C Left male palp (A prolateral, B ventral, C retrolateral); D Epigyne, ventral; E Vulva, dorsal. Red arrow–Embolic apophysis distally with distinct hook-shaped apophysis, Blue arrow—Embolus tip with small hook-shaped apophysis, AB—anterior bands, C—conductor, dRTA—dorsal retrolateral tibial apophysis, E—embolus, EA—embolic apophysis, FD—fertilization duct, GA—glandular appendage, LL—lateral lobes, LS—lobal septum, MS—membranous sac, PP—posterior part of spermathecae, SP—spermophor, ST—subtegulum, T—tegulum, vRTA—ventral retrolateral tibial apophysis. Scale bars: 0.5 mm.

FIGURES 27. Sinopoda improcera sp. nov., holotype male from Yunfengshan Scenic Area. A–C Left male palp (A prolateral, B ventral, C retrolateral); D Left male palpal tibia, retrolateral; E–F Male habitus (E dorsal, F ventral). Scale bars:A–D 0.5 mm, E–F 2 mm.

FIGURES 28. Sinopoda improcera sp. nov., paratype female from Yunfengshan Scenic Area. 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 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).