Pholcus zhuchuandiani Yao & Li, sp. nov.

Pholcus zhuchuandiani Yao & Li sp. nov.

Figs 19–20, 31 E–F

Type material. Holotype: male, Camp of Internation Timber Corp. of Indonesia (01°05.292′S, 116°41.094′E, elevation 64 m), Penajam, East Kalimantan, Indonesia, 16 August 2014, H. Zhao and Z. Yao leg. Paratypes: 1 male and 1 female, same data as holotype.

Etymology. The specific name is a patronym in honor of the late Professor Chuandian Zhu for his contribution on taxonomy of spiders from China; noun (name) in genitive case.

Diagnosis. This species resembles P. halabala Huber, 2011 (see Huber 2011: 128, figs 495–496, 517–518, 530–535), P. s e pa k u (see Huber 2011: 131, fig. 536) and P. lintang Huber, 2016 (see Huber et al. 2016: 13, figs 11– 12, 34–38, 93–95) in having similar male chelicerae (Fig. 20 D), uncus, appendix (Fig. 20 C), and female genetalia (Figs. 20 A–B) but can be distinguished by the presence of a sclerotized, angular prolateral apophysis subdistally on the procursus (arrow in Fig. 19 C). This species also resembles P. anaiensis sp. nov. (Figs 11–12) in having similar male chelicerae (Fig. 20 D) and uncus (Fig. 20 C) but can be distinguished by a distally blunt appendix (Fig. 20 C) and the presence of a sclerotized, angular prolateral apophysis subdistally on the procursus (arrow in Fig. 19 C).

Description. Male (holotype): Total length 3.84 (4.04 with clypeus), carapace 1.03 long, 1.13 wide, opisthosoma 2.81 long, 0.75 wide. Leg I: 33.82 (6.73 + 0.48 + 8.85 + 16.67 + 1.09), leg II: 22.39 (6.09 + 0.48 + 5.64 +9.29 + 0.89), leg III: 13.66 (4.10 + 0.42 + 3.32 + 5.13 + 0.69), leg IV: 19.87 (6.09 + 0.42 + 4.68 + 7.82 + 0.86); tibia I L/d: 80. Distance PME-PME 0.33; diameter PME 0.11; distance PME-ALE 0.04; distance AME- AME 0.05; diameter AME 0.05. Sternum wider than long (0.75/0.56). Habitus as in Figs 20 E–F. Carapace yellowish, with brown radiating marks; ocular area yellowish; clypeus and sternum yellowish. Legs yellowish, patellae yellow, distal parts of tibiae and proximal parts of metatarsi brown, darker rings absent. Opisthosoma pale grey, with dark brown and whitish spots dorsally and laterally. Ocular area elevated; each eye triad on top of a short, laterally directed eye-stalk, with a bunch of short macrosetae between PME (Fig. 31 E). Thoracic furrow absent. Chelicerae as in Fig. 20 D, with a pair of weakly sclerotized proximolateral apophyses, a pair of black distal apophyses with two teeth each, and a pair of frontal apophyses. Pedipalps as in Figs 19 A–B; trochanter with a long ventral apophysis; femur with a dorsal apophysis proximally and distinct ventral modification; procursus with a large dorsal flap medially and a sclerotized, angular prolateral apophysis subdistally (arrow in Fig. 19 C); uncus with scales; appendix (Fig. 20 D) bent with scales, embolus weakly sclerotized with some transparent projections distally. Retrolateral trichobothrium of tibia I at 7.1%; legs with short vertical setae on tibiae, metatarsi and tarsi; without spines and curved seate; tarsus I with approximately 17 distinct pseudosegments.

Female: Similar to male, habitus as in Figs 20 G–H. 4.00 (4.34 with clypeus), carapace 0.96 long, 1.06 wide, opisthosoma 3.04 long, 1.26 wide; tibia I: 6.86; tibia I L/d: 64. Sternum wider than long (0.71/0.59). Distance PME-PME 0.24; diameter PME 0.09; distance PME-ALE 0.05; distance AME-AME 0.05; diameter AME 0.06. Sternum with brown marks posteriorly. Ocular area without eye-stalks and bunch of short macrosetae (Fig. 31 F). External genitalia (Fig. 20 A) with a small, nearly transparent knob. Vulva (Fig. 20 B) with a sclerotized anterior arch and two nearly oval pore plates.

Distribution. Indonesia (East Kalimantan, type locality; Fig. 32).

Natural history. The species was found on the underside of leaves.