Thelcticopis dahanensis Zhu & Zhong, 2020

Zhu, Yang, Lin, Ye-Jie & Zhong, Yang, 2020, Two new and one newly recorded species of Thelcticopis Karsch, 1884 (Araneae, Sparassidae) from China, ZooKeys 940, pp. 105-115 : 105

Thelcticopis dahanensis Zhu & Zhong sp. nov. Figures 1 , 5

Type materials.

Holotype. ♂ (CBEE), China, Taiwan Island, Pingdong County, Mt. Dahan, 22.41N, 120.74E, 29.VI.2013, J. Liu leg. Paratypes (CBEE): ♂, same data as holotype.

Etymology.

The specific name is a noun in apposition taken from the type locality.

Diagnosis.

The male of this new species resembles those of other Chinese Thelcticopis species ( T.>T. severa , T. unciformis sp. nov. and T.>T. zhengi ) in having stout tibia, broad cymbium and spoon-shaped tegular apophysis, but can be separated from T.>T. severa by RTA arising distally from tibia, branched (arising proximally, not branched in T.>T. severa ); from T. unciformis sp. nov. by the developed conductor with two branches distally, dorsal branch extending beyond ventral one (dorsal branch not extending beyond ventral one in T. unciformis sp. nov.), from T.>T. zhengi by the long embolus with filiform end, visible in ventral view (but short, with blunt end, covered by a large tegular apophysis in T.>T. zhengi ) (Fig. 1A-E ).

Description.

Male. PL 6.1, PW 5.3, AW 2.8, OL 6.0, OW 3.1. Eyes: AME 0.25, ALE 0.21, PME 0.18, PLE 0.20, AME-AME 0.25, AME-ALE 0.34, PME-PME 0.58, PME-PLE 0.69, AME-PME 0.36, ALE-PLE 0.34, CHAME 0.16, CHALE 0.14. Spination: Palp: 131, 101, 0002; Fe: I-II 323, III 322, IV 321; Pa: I-IV 000; Ti: I-II 212 10, III-IV 2126; Mt: I-II 1012, III 3032, IV 3034. Measurements of palp and legs: Palp 7.5 (2.2, 0.8, 1.3, -, 3.2), I 20.6 (5.6, 2.8, 5.6, 5.3, 1.3), II 18.7 (5.1, 2.7, 5.0, 4.7, 1.2), III 15.5 (4.6, 2.3, 3.9, 3.7, 1.0), IV 19.7 (5.8, 2.2, 4.8, 5.7, 1.2). Leg formula: I-IV-II-III. Cheliceral furrow with three anterior and five posterior teeth, without denticles (Fig. 1F ). Dorsal prosoma reddish brown, posterior margins dark, with shallow fovea and radial furrows. Chelicerae deep reddish brown. Sternum yellowish brown, with margin deep brown. Gnathocoxae and labium deep yellowish brown, with white distal lips. Legs deep reddish to yellowish brown, covered by short spines. Dorsal opisthosoma with irregular patches and distinct median chevrons in posterior half. Ventral opisthosoma with patches especially in lateral half (Fig. 1G, H ).

Palp as in diagnosis. Cymbium approximately two times longer than tibia in ventral view. Conductor arising from tegulum in the 11- o’clock-position. Appendage of median apophysis finger-shaped in ventral view. Sperm duct almost straight in ventral view. vRTA with tip pointed and dRTA blunt in retrolateral view. Palpal tibia retrolaterally with distinct bunch of nine setae (Fig. 1A-E ).

Female. Unknown.

Distribution.

Known only from the type locality (Fig. 5 ).

Figures

Figure 1. Thelcticopis dahanensis Zhu & Zhong, sp. nov., holotype male A-C palp, left D left male palpal tibia E tegular apophysis F cheliceral dentition G, H male habitus (A prolateral view; B, E, F, H ventral view; C, D retrolateral view; G dorsal view). Abbreviations: C-conductor, dRTA-dorsal branch of RTA, E-embolus, TA-tegular apophysis, SP-spermophore, vRTA-ventral branch of RTA. Scale bars: 0.5 mm (A-F); 5 mm (G, H).

Figure 5. Collection localities of three Thelcticopis species from China.