Deione yangi, Mi & Li, 2021

Mi, Xiaoqi & Li, Shuqiang, 2021, Nine new species of the spider family Araneidae (Arachnida, Araneae) from Xishuangbanna, Yunnan, China, ZooKeys 1072, pp. 49-81 : 49

Deione yangi sp. nov.

Figs 9 , 10 , 20C

Type material

. Holotype. ♀ (IZCAS-Ar42541), China: Yunnan, Xishuangbanna, Mengla County, Menglun Town, Menglun Nature Reserve, primary tropical seasonal rainforest (21°57.67'N, 101°11.89'E, ca 790 m), 19-26.IV.2007, G. Zheng leg. Paratypes: 1♀ (IZCAS-Ar42542), primary tropical seasonal rainforest (21°57.59'N, 101°12.21'E, ca 822 m, ca 730 m), 8.VIII.2007, G. Zheng leg.; 1♂ (IZCAS-Ar42543), Xishuangbanna Tropical Botanical Garden, Edible Botanical Garden (21°54.95'N, 101°16.18'E, ca 610 m), 28.VII.2018, X. Mi leg.

Comparative material

. Deione lingulata , 5♂ 3♀, China: Hainan, Wuzhishan City, Shuiman Township, Wuzhishan National Natural Reserve (18°54.17'N, 109°41.14'E, ca 870 m), 10.VIII.2020, X. Mi leg. (Figs 11 , 20D )

Etymology

. The species is named after Mr. Yuanfa Yang (Tongren, Guizhou), one of the collectors of the type specimens; noun (name) in genitive case.

Diagnosis

. The new species resembles D. lingulata in habitus and copulatory organs but differs in the: 1) thin terminal apophysis, distally the width about equal to the nearest part of embolus vs. terminal apophysis thick, distally about four times wider than the nearest part of the embolus ( Han et al. 2009: figs. 12, 13; Fig. 11 ); 2) median apophysis elliptical in prolateral view vs. triangular ( Han et al. 2009: fig. 12; Fig. 11A ); 3) scape triangular vs. almost rectangular ( Han et al. 2009: figs. 8, 9); and 4) spermathecae touching vs. less than their diameter apart ( Han et al. 2009).

Description

. Female (holotype, Fig. 10A-C, F, G ). Total length 6.20. Carapace 2.70 long, 2.00 wide. Abdomen 3.90 long, 2.40 wide. Clypeus 0.10 high. Eye sizes and interdistances: AME 0.18, ALE 0.13, PME 0.15, PLE 0.13, AME-AME 0.15, AME-ALE 0.50, PME-PME 0.20, PME-PLE 0.53, MOA length 0.48, anterior width 0.45, posterior width 0.45. Leg measurements: I 7.70 (2.20, 2.70, 1.90, 0.90), II 6.90 (2.00, 2.40, 1.70, 0.80), III 4.60 (1.50, 1.60, 0.90, 0.60), IV 6.50 (1.90, 2.30, 1.60, 0.70). Carapace almost rectangular, brown, with pale setae, cervical groove obvious. Chelicerae brown, five promarginal teeth, four retromarginal teeth in left chelicera, and five in right. Endites almost rectangular, brown, paler distally, labium triangular, dark brown, paler distally. Sternum heart-shaped, brown. Legs yellow with brown annulations. Abdomen oval, about 1.6 times longer than wide, with two pairs of long setae anteriorly, two pairs of vertically arranged lateral tubercles posteriorly, dorsum grayish brown with yellow patches anteriorly and laterally; venter yellow, big gray patch medially. Spinnerets grayish yellow, at posterior 1/4 of the abdomen.

Epigyne (Fig. 10A-C ): about 1.8 times wider than long; scape triangular; copulatory openings arcuate, situated laterally in posterior view; copulatory ducts longer than spermatheca, arcuate in posterior view; spermathecae globular, touching each other.

Male (paratype IZCAS-Ar42543, Figs 9 , 10D, E , 20C ). Total length 3.75. Carapace 1.70 long, 1.35 wide. Abdomen 2.15 long, 1.30 wide. Clypeus 0.10 high. Eye sizes and interdistances: AME 0.15, ALE 0.10, PME 0.13, PLE 0.10, AME-AME 0.10, AME-ALE 0.23, PME-PME 0.15, PME-PLE 0.28, MOA length 0.38, anterior width 0.35, posterior width 0.38. Leg measurements: I 4.25 (1.25, 1.60, 0.95, 0.45), II 4.35 (1.45, 1.50, 0.95, 0.45), III 2.75 (0.90, 0.95, 0.55, 0.35), IV 3.85 (1.15, 1.45, 0.85, 0.40). Habitus similar to that of female, but tibia II expanded, with 3 macrosetae and chelicerae with 3 retromarginal teeth.

Palp (Figs 9A, B , 20C ): median apophysis elliptical in prolateral view, pointed distally; embolus slender, longer than bulb diameter; conductor as wide as bulb, membranous; terminal apophysis spinose, slightly curved.

Variation

. Total length: ♀♀ 6.20-6.50.

Distribution

. China (Yunnan).

Figures

Figure 9. Deione yangi sp. nov., male paratype IZCAS-Ar 42543, palp A prolateral view B retrolateral view C left leg II, prolateral view. Scale bars: 0.1 mm (A, B); 1 mm (C)

Figure 10. Deione yangi sp. nov. A-C, F, G holotype D, E male paratype IZCAS-Ar 42543 A epigyne, ventral view B ibid., posterior view C vulva, anterior view D habitus, dorsal view E ibid., lateral view F ibid., dorsal view G ibid., ventral view. Scale bars: 0.1 mm (A-C); 1 mm (D-G)

Figure 11. Deione lingulata, male palp A prolateral view B retrolateral view. Scale bars: 0.1 mm

Figure 20. Male palps, apical view A Acusilas tongi sp. nov. B Chorizopesoides guoi sp. nov. C Deione yangi sp. nov. D Deione lingulata. Scale bars: 0.1