Trachelas gaoligongensis Jin, Yin & Zhang 2017
Creators: name: Tang, Gang
name: Yan, Wen-long
name: Zhao, Yi
name: Peng, Xian-jin
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Trachelidae
Trachelas
Trachelas gaoligongensis

description: Trachelas gaoligongensis Jin, Yin & Zhang, 2017
Figs 1, 2, 3, 4
Trachelas gaoligongensis Jin, Yin & Zhang, 2017: 42, figs 16 A-G, 18 A, B (♀).
Material examined.
• 4 ♂, 1 ♀ (HNU - 20071010); China, Yunnan Prov., Longyang County, Mangkuan Baihualing; 25.30366 ° N, 98.80032 ° E; 1624 m a. s. l.; 10 October 2007; Xian-jin Peng leg. • 2 ♀ (HNU - Tang- 04-12); China, Yunnan Prov., Gongshan County, Cikai Township, Heiwadi Village; 27.47101 ° N, 98.35533 ° E; 1850 m a. s. l.; 13-16 November. 2004; Guo Tang leg. • 2 ♀ (HNU - DHK-2004-082); China, Yunnan Prov., Gongshan County, Dulongjiang Township, 0.2 km S of confluence of Dulongjiang with Muke Wang [river]; 27.84125 ° N, 98.32979 ° E; 1450 m a. s. l.; 11 November 2004; D. H. Kavanaugh leg. • 1 ♀ (HNU - VFL-04-0027); China, Yunnan Prov., Gongshan County, Bingzhongluo Township, west side of bridge NW of Stone Gate; 28.06670 ° N, 98.58890 ° E; 1500 m a. s. l.; 11 December 2004; V. F. Lee leg.
Etymology.
The species name “ gaoligongensis ” refers to the Gaoligong mountain range where the type locality is found, adjective.
Diagnosis.
The male of Trachelas gaoligongensis (Figs 2, 4 A-C) resembles that of T. bomiensis Jin & Mi, 2024 (see Liu et al. 2024, fig. 2 A-D) in having a hook-shaped sperm duct and a protruding genital bulb but differs as follows: (1) the embolus is enlarged at the base and elongated at the tip in retrolateral view (vs. elongated at the base and with two spirals at the tip); (2) the retrolateral tibial apophysis points to the dorsal side of the cymbium in prolateral view (vs. absent); and (3) the retrolateral patellar apophysis is longitudinally bar-shaped, distally covered with feathery setae in retrolateral view (vs. distal portion transversely bent toward tibia and without feathery setae). The female of T. gaoligongensis (Figs 3, 4 D, E) resembles that of T. kavanaughi sp. nov. (see Figs 5 E, F, 7 A, B) in the shape of the atrium and secondary spermathecae, but differs as follows: (1) the atrium is about as long as wide in ventral view (vs. wider than long); (2) the copulatory openings are posteriorly located on the genitalia in ventral view (vs. anteriorly located on the genitalia); (3) the primary spermathecae are oval in dorsal view (vs. round); and (4) the interdistance of the secondary spermathecae is more than twice the width of the primary spermathecae in dorsal view (vs. narrower than the width of the primary spermathecae).
Description.
Male. (one of HNU - 20071010) (Fig. 1 A-E). Total length 4.06. Carapace 2.05 long, 1.64 wide; abdomen 2.30 long, 1.65 wide. Carapace brown, fovea thin and black, cervicle and radial grooves distinct. Chelicerae and labium brown, three promarginal and two retromarginal teeth. Sternum and endites yellowish brown, truncated margin of sternum with distinct crescent-shaped depression. Eye sizes and interdistances: AME 0.14, ALE 0.14, PME 0.14, PLE 0.11, AME - AME 0.06, AME - ALE 0.02, PME - PME 0.11, PME - PLE 0.10, ALE - PLE 0.08. MOA 0.34 long, anterior width 0.28, posterior width 0.36. Clypeus height 0.12. Legs yellowish brown, with black rings. Leg measurements: leg I 5.38 (1.68, 2.19, 0.92, 0.59), II 5.24 (1.61, 2.13, 0.87, 0.63), III 3.15 (0.87, 0.90, 0.94, 0.44), IV 5.60 (1.74, 1.83, 1.45, 0.58). Leg formula: 4123. Abdomen oval, apricot-white; anterior half of dorsum with two black-brown longitudinal stripes; posterior half with five black-brown chevrons decreasing in size from anterior to posterior; venter with three dark longitudinal stripes. Spinnerets with parenthesis-shaped marks laterally.
Palp (Figs 2, 4 A-C). Retrolateral patellar apophysis finger-like, as long as patella, distally covered with feathery setae; retrolateral tibial apophysis spur-like, as long as tibia, pointed distally; genital bulb oval, embolus short, with base broad and spiralled, apex constricted and spinelike. Sperm duct distinct and hook-shaped.
Female. (HNU - 20071010) (Fig. 1 F-J). Total length 4.95. Carapace 1.70 long, 1.39 wide; abdomen 2.84 long, 1.79 wide. Eye sizes and interdistances: AME 0.09, ALE 0.09, PME 0.11, PLE 0.11, AME - AME 0.08, AME - ALE 0.02, PME - PME 0.10, PME - PLE 0.09, ALE - PLE 0.08. MOA 0.28 long, anterior width 0.24, posterior width 0.32. Clypeus height 0.11. Leg measurements: leg I 4.81 (1.50, 1.80, 0.89, 0.62), II 4.57 (1.44, 1.63, 0.91 0.59), III 3.73 (1.19, 1.12, 0.91, 0.51), IV 5.47 (1.54, 1.91, 1.40, 0.62). Leg formula: 4123. Abdomen oblong, anterior half of dorsum with a black-brown longitudinal stripe and some irregular darker patches. Other characters as in male.
Epigyne (Figs 3, 4 D, E). Atrium about as long as wide, copulatory openings pore-like, located at posterior of epigyne; copulatory ducts C-shaped, connected to n-shaped secondary spermathecae; connecting ducts slender, axisymmetric; primary spermathecae oval, connected to lightly sclerotized fertilization ducts.
Distribution.
China (Yunnan) (Fig. 8).
description: Published as part of Tang, Gang, Yan, Wen-long, Zhao, Yi & Peng, Xian-jin, 2024, Description of two new species of the genus Trachelas L. Koch, 1872 and the male of T. gaoligongensis Jin, Yin & Zhang, 2017 from China (Araneae, Trachelidae), pp. 127-138 in ZooKeys 1215 on pages 127-138, DOI: 10.3897/zookeys.1215.130564