Pholcus tangyuensis Yao & Li, sp. nov.
Creators: name: Dong, Tingting
name: Zheng, Guo
name: Yao, Zhiyuan
name: Li, Shuqiang
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Pholcidae
Pholcus
Pholcus tangyuensis

description: Pholcus tangyuensis Yao & Li sp. nov.
Figs 21–22
Type material. Holotype: male, Tangyu National Forest Park (33°55.955′N, 109°15.300′E, elevation 1137 m), Tangyu Town, Lantian County, Xian, Shaanxi, China, 2 October 2013, Y. Li and J. Liu leg. Paratypes: 1 male and 1 female, same data as holotype.
Etymology. The specific name refers to the type locality; adjective.
Diagnosis. This species resembles P. alpinus Yao & Li, 2012 (see Yao & Li 2012: 8, figs 15–18) in with male chelicerae (Fig. 22 D), procursus (Figs. 21 C–D), uncus (Fig. 22 C) and vulva (Fig. 22 B) but can be distinguished by the absence of apophyses subdistally on the male pedipalpal trochanteral apophyses (Fig. 21 B), by the distally swollen appendix (Fig. 22 C) and by the nearly triangular epigynum (Fig. 22 A).
Description. Male (holotype): Total length 4.66 (4.91 with clypeus), carapace 1.52 long, 1.58 wide, opisthosoma 3.14 long, 1.54 wide. Leg I: 34.23 (8.31 + 0.67 + 8.43 + 14.44 + 2.38), leg II: 21.82 (6.28 + 0.62 + 5.59 + 8.06 + 1.27), leg III: 16.12 (4.76 + 0.61 + 3.88 + 5.88 + 0.99), leg IV: 19.30 (6.43 + 0.58 + 5.31 + 5.75 + 1.23); tibia I L/d: 53. Distance PME-PME 0.25; diameter PME 0.11; distance PME-ALE 0.05; distance AME- AME 0.06; diameter AME 0.11. Sternum wider than long (1.06/0.81). Habitus as in Figs 22 E–F. Carapace yellowish, with brown radiating marks and brown bands marginally; ocular area yellowish; sternum brown with yellowish marks medially. Legs yellowish, femora (subproximally and subdistally) and tibiae (subproximally and subdistally) with darker rings. Opisthosoma yellowish, with small spots dorsally and laterally. Ocular area elevated, without eye-stalks (as in P. gonggarensis sp. nov., cf. Fig. 27 C). Thoracic furrow absent. Chelicerae as in Fig. 22 D, with a pair of proximo-lateral apophyses; a pair of dark brown distal apophyses and a pair of indistinct frontal apophyses. Pedipalps as in Figs 21 A–B; trochanter with a ventral apophysis provided with a retrolateral projection; femur with a distinct ventral ridge; tibia with a projection prolaterally; procursus simple, with a retrolateral spine-like apophysis (arrow in Fig. 21 D) and some nearly transparent process distally; uncus with a scaly edge; appendix hooked, swollen distally, with a branch subdistally; embolus weakly sclerotized, with some transparent projections distally. Retrolateral trichobothrium of tibia I at 1%; legs with short vertical setae on tibiae, metatarsi and tarsi; without spines and curved setae; tarsus I with 34 distinct pseudosegments.
Female: Similar to male, habitus as in Figs 22 G–H. Total length 4.35 (4.57 with clypeus), carapace 1.29 long, 1.56 wide, opisthosoma 3.06 long, 1.55 wide; tibia I: 6.83; tibia I L/d: 38. Distance PME-PME 0.20; diameter PME 0.15; distance PME-ALE 0.05; distance AME-AME 0.04; diameter AME 0.09. Sternum wider than long (0.98/ 0.75). Ocular area with brown marks. Epigynum (Fig. 22 A) with a long knob. Vulva (Fig. 22 B) with a sclerotized anterior arch and two nearly rounded pore plates.
Distribution. China (Shaanxi, type locality; Fig. 28).
Natural History. The species was found on the rock walls.
description: Published as part of Dong, Tingting, Zheng, Guo, Yao, Zhiyuan & Li, Shuqiang, 2016, Thirteen new species of the spider genus Pholcus Walckenaer, 1805 (Araneae: Pholcidae) from China, pp. 1-40 in Zootaxa 4170 (1) on page 30, DOI: 10.11646/zootaxa.4170.1.1, http://zenodo.org/record/265456