Chorizopesoides guoi, 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

Chorizopesoides guoi sp. nov.

Figs 5 , 6 , 20B

Type material

. Holotype. ♂ (IZCAS-Ar42520), China: Yunnan, Xishuangbanna, Mengla County, Menglun Town, Menglun Nature Reserve, primary tropical seasonal rainforest (21°55.04'N, 101°16.50'E, ca 560 m), 22.VII.2007, G. Zheng leg. Paratypes: 2♂3♀ (IZCAS-Ar42521-42525), same data as holotype; 1♀ (IZCAS-Ar42526), primary tropical seasonal rainforest (21°57.43'N, 101°12.28'E, ca 792 m), 1-15.VI.2007, G. Zheng leg.; 1♂1♀ (IZCAS-Ar42527-42528), secondary tropical seasonal moist forest (21°54.72'N, 101°16.94'E, ca 650 m), 27.VII.2007, G. Zheng leg.; 3♂2♀ (IZCAS-Ar42529-42533), secondary tropical seasonal moist forest (21°54.61'N, 101°17.01'E, ca 630 m), 28.VII.2007, G. Zheng leg.

Other material examined

. 1♀ (IZCAS-Ar42534), Xishuangbanna Tropical Botanical Garden, eastern part (21°54.07'N, 101°16.36'E, ca 540 m), 16.VII.2018, X. Mi leg.; 1♀ (IZCAS-Ar42535), Xishuangbanna Tropical Botanical Garden, vine garden (21°55.76'N, 101°15.73'E, ca 490 m), 17.VII.2018, night, X. Mi leg.; 1♀ (IZCAS-Ar42536), G213 roadside near 68 km (21°53.82'N, 101°16.79'E, ca 620 m), 27.VII.2018, X. Mi leg.

Comparative material

. Chorizopesoides wulingensis , Holotype ♀, CHINA: Hunan, Sangzhi County, Nanmuping, 17.XIII.1984, J.F. Wang leg. (Fig. 7 )

Etymology

. The species is named after Professor Guo Zheng, one of the collectors of the type specimens; noun (name) in genitive case.

Diagnosis

. The new species resembles C. wulingensis and C. annasestakovae sp. nov. in appearance, but females can be distinguished from both by the: 1) copulatory ducts spirally coiled vs. circular (Fig. 7C ; Mi and Wang, 2018: fig. 3E); 2) pale abdomen with distinct black stripes vs. dark brown abdomen with indistinct stripes; 3) pale cephalon behind eyes vs. dark cephalon with two small, pale spots (Fig. 7D ) or without spots ( Mi and Wang, 2018: fig. 1C). From C. wulingensis by the: 1) scape shorter than half a spermatheca diameter vs. longer than half a spermatheca diameter (Fig. 7 ); 2) median plate narrower than a spermatheca diameter vs. wider than a spermatheca diameter (Fig. 7 ); it can be distinguished from C. annasestakovae sp. nov. by the: 1) scape not concave vs. concave ( Mi and Wang, 2018: fig. 3D-E); 2) shape of the epigyne wider than long vs. as long as wide; 3) palpal tibia wider than long with a cluster of macrosetae vs. as long as tibia width without conspicuous macrosetae ( Mi and Wang, 2018: fig. 3A, C); 4) tegulum triangularly elongated (retrolateral view) vs. not so elongated and rounder ( Mi and Wang, 2018: fig. 3C); 5) median apophysis slender, two times longer than wide vs. shorter and higher ( Mi and Wang, 2018: fig. 3A); 6) tip of the embolus extending beyond the edge of the tegulum (apical view) vs. shorter embolus, not reaching the edge of the tegulum ( Mi and Wang, 2018: fig. 3B).

Description

. Male (holotype, Figs 5A, B , 6D, E , 20B ). Total length 2.90. Carapace 1.60 long, 0.95 wide. Abdomen 1.65 long, 1.40 wide. Clypeus 0.18 high. Eye sizes and interdistances: AME 0.13, ALE 0.08, PME 0.10, PLE 0.08, AME-AME 0.13, AME-ALE 0.40, PME-PME 0.25, PME-PLE 0.43, MOA length 0.30, anterior width 0.33, posterior width 0.43. Leg measurements: I 3.41 (0.95, 1.13, 0.80, 0.53), II 3.46 (0.90, 1.15, 0.88, 0.53), III 2.40 (0.70, 0.80, 0.50, 0.40), IV 3.29 (0.95, 1.13, 0.73, 0.48). Carapace rectangular, dark brown, with sparse, pale setae, cervical groove obvious. Chelicerae dark brown, five promarginal teeth. Endites wider than long, dark brown basally, paler distally, labium wider than long, triangular, dark brown. Sternum triangular, dark brown, paler medially. Legs yellow with brown annulations. Abdomen about 1.2 times longer than wide, with three pairs of lateral tubercles and three vertical caudal tubercles, dorsum grayish black with lots of brown sigilla; venter grayish black. Spinnerets yellowish brown.

Palp (Figs 5 , 20B ): tibia with a cluster of macrosetae (approx. 12) distal-dorsally, macrosetae about 1.5 times length of tibia; median apophysis about 1/2 length of bulb diameter in apical view, distal end pointed; embolus extremely long, slender, more than two times length of bulb diameter; terminal apophysis membranous, equal in length to embolus; conductor membranous, shorter than median apophysis in prolateral view.

Female (paratype IZCAS-Ar42521, Fig. 6A-C, E, F ). Total length 3.55. Carapace 1.75 long, 1.40 wide. Abdomen 2.00 long, 1.75 wide. Clypeus 0.15 high. Eye sizes and interdistances: AME 0.13, ALE 0.08, PME 0.10, PLE 0.08, AME-AME 0.15, AME-ALE 0.45, PME-PME 0.25, PME-PLE 0.48, MOA length 0.30, anterior width 0.30, posterior width 0.40. Leg measurements: I 3.31 (0.90, 1.10, 0.78, 0.53), II 3.19 (0.88, 1.08, 0.75, 0.48), III 2.46 (0.70, 0.83, 0.48, 0.45), IV 3.45 (1.00, 1.25, 0.75, 0.45). Habitus as in male, coloration much paler.

Epigyne

(Fig. 6A-C ): about two times wider than long, scape shorter than half a spermatheca diameter; copulatory openings concave, located at lateral side of posterior surface; copulatory ducts long, coiled 720°; spermathecae globular, touching each other.

Variation

. Total length: ♂♂ 2.55-3.05; ♀♀ 3.25-4.85.

Distribution

. China (Yunnan).

Figures

Figure 5. Chorizopesoides guoi sp. nov., holotype, male palp A prolateral view B retrolateral view (embolus broken). Scale bars: 0.1 mm

Figure 6. Chorizopesoides guoi sp. nov. A-C, E, F female paratype IZCAS-Ar 42521 D, E holotype A epigyne, ventral view B ibid., posterior view C vulva, dorsal view D habitus, dorsal view E ibid., lateral view F habitus, dorsal view G ibid., ventral view. Scale bars: 0.1 mm (A-C); 1 mm (D-G)

Figure 7. Chorizopesoides wulingensis, holotype A epigyne, ventral view B ibid., posterior view C vulva, dorsal view D habitus, dorsal view E ibid., ventral view. Scale bars: 0.1 mm (A-C); 1 mm (D, E)

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