Chorizopes yui, 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

Chorizopes yui sp. nov.

Figs 3 , 4

Type material

. Holotype. ♂ (IZCAS-Ar42512), China: Yunnan, Xishuangbanna, Mengla County, Menglun Township, Menglun Nature Reserve, high plantations near G213 roadside (21°54.12'N, 101°16.93'E, ca 590 m), 24.XI.2009, G. Tang leg. Paratypes: 1♂ (IZCAS-Ar42513), Anogeissus acuminata plantation (approx. 20 years old) (21°53.99'N, 101°16.81'E, ca 610 m), 19.VIII.2007, G. Zheng leg.; 2♀ (IZCAS-Ar42514-42515), garbage dump, secondary tropical forest (21°54.38'N, 101°16.82'E, ca 620 m), 23.XI.2009, G. Tang leg.; 1♂ (IZCAS-Ar42516), Lüshilin Forest Park, limestone tropical seasonal rainforest (21°54.56'N, 101°16.86'E, ca 610 m), 29.XI.2009, G. Tang leg.; 1♀ (IZCAS-Ar42517), secondary tropical forest, bamboo plantation along G213 roadside (21°53.82'N, 101°16.99'E, ca 610 m), 3.VIII.2018, Z. Bai leg.; 1♂ (IZCAS-Ar42518), Xishuangbanna Tropical Botanical Garden, site 1 around the dump (21°53.28'N, 101°16.75'E, ca 630 m), 25.IV.2019, Z. Bai leg.; 1♀ (IZCAS-Ar42519), Xishuangbanna Tropical Botanical Garden, Baihuayuan (21°55.60'N, 101°14.87'E, ca 540 m), 3.V.2019 night, C. Wang leg.

Etymology

. The species is named after Dr. Hao Yu, one of the collectors of the type specimens; noun (name) in genitive case.

Diagnosis

. The new species can be distinguished from congeneric species by the: 1) yellowish white abdomen with a dark rhomboid patch; 2) triangular copulatory openings; 3) translucent, thread-like terminal apophysis; 4) fan-shaped median apophysis in prolateral view.

Description

. Male (holotype, Figs 3A, B, D , 4D, E ). Total length 3.60. Carapace 1.60 long, 1.00 wide. Abdomen 2.00 long, 1.20 wide. Clypeus 0.10 high. Eye sizes and interdistances: AME 0.13, ALE 0.08, PME 0.10, PLE 0.09, AME-AME 0.13, AME-ALE 0.45, PME-PME 0.18, PME-PLE 0.35, MOA length 0.33, anterior width 0.35, posterior width 0.35. Leg measurements: I 3.65 (1.05, 1.30, 0.80, 0.50), II 3.75 (1.05, 1.45, 0.75, 0.50), III 2.25 (0.60, 0.75, 0.45, 0.45), IV 4.15 (1.15, 1.50, 0.90, 0.60). Carapace oval, brown, elevated, cervical groove inconspicuous. Chelicerae brown, seven promarginal teeth. Endites yellow, labium triangular, brown. Sternum triangular, yellowish brown, with pale setae. Legs yellow with brown annulations. Abdomen cylindrical, with pair of lateral tubercles and two vertically arranged tubercles posteriorly, grayish yellow with dark rhomboid patch; venter grayish yellow with large, white patch medially. Spinnerets yellowish brown.

Palp (Fig. 3 ): paracybium flattened; median apophysis fan-shaped in prolateral view, with two lamellar spurs (see arrows in Fig. 3C ); embolus length about equal to bulb diameter, curved, slightly flattened; conductor about 4/5 length of bulb diameter in prolateral view; terminal apophysis translucent, slender, curved, length almost equal to that of embolus.

Female (paratype IZCAS-Ar42514, Fig. 4A-C, F, G ). Total length 6.50. Carapace 2.10 long, 1.40 wide. Abdomen 4.70 long, 2.60 wide. Clypeus 0.13 high. Eye sizes and interdistances: AME 0.13, ALE 0.08, PME 0.09, PLE 0.10, AME-AME 0.20, AME-ALE 0.53, PME-PME 0.25, PME-PLE 0.73, MOA length 0.40, anterior width 0.43, posterior width 0.43. Leg measurements: I 4.70 (1.35, 1.70, 1.05, 0.60), II 4.60 (1.35, 1.65, 1.00, 0.60), III 3.15 (0.85, 1.10, 0.60, 0.60), IV 5.70 (1.60, 2.15, 1.25, 0.70). Habitus like in male, coloration of abdomen slightly paler.

Epigyne (Fig. 4A-C ): about 1.1 times wider than long; scape about four times wider than long, strongly rebordered; copulatory openings triangular, located posteriorly; copulatory ducts short, twisted; spermathecae ovoid, touching each other.

Variation

. Total length: ♂♂ 2.90-3.60; ♀♀ 6.00-6.50.

Distribution

. China (Yunnan).

Figures

Figure 3. Chorizopes yui sp. nov., male palp A, B, D holotype C male paratype IZCAS-Ar 42513. A prolateral view B retrolateral view C expanded in lactic acid D apical view. Scale bars: 0.1 mm

Figure 4. Chorizopes yui sp. nov. A-C, F, G female paratype IZCAS-Ar 42514 D, E holotype A epigyne, ventral view B ibid., posterior view C vulva, dorsal 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)