Pholcus anaiensis Yao & Li

Dong, Tingting, Zheng, Guo, Yao, Zhiyuan & Li, Shuqiang, 2016, Fifteen new species of the spider genus Pholcus (Araneae: Pholcidae) from Southeast Asia, Zootaxa 4136 (2), pp. 201-246 : 214-219

Pholcus anaiensis Yao & Li sp. nov.

Figs 11–12

Type material. Holotype: male, near waterfall (00°29.303′S, 100°20.375′E, elevation 385 m), Anai, Mountain Singalang, Padangpanjang, West Sumatra, Sumatra, Indonesia, 10 May 2014, Z. Yao leg.

Etymology. The specific name refers to the type locality; adjective.

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 Huber, 2011 (see Huber 2011: 131, fig. 536), P. lintang Huber, 2016 (see Huber et al. 2016: 13, figs 11–12, 34–38, 93–95), and P. zhuchuandiani sp. nov. ( Figs 19–20 ) in having similar male chelicerae ( Fig. 12 B) and a similar uncus ( Fig. 12 A) but can be distinguished by the distally pointed appendix ( Fig. 12 A) and by the presence of a small, pointed dorsal flap medially on the procursus (arrow in Fig. 11 C).

Description. Male (holotype): Total length 3.99 (2.29 with clypeus), carapace 1.02 long, 1.06 wide, opisthosoma 2.97 long, 0.76 wide. Leg I and leg II missing, leg III: – (4.49 + 0.46 + 3.85 + 4.74 + –), leg IV: 22.39 (6.73 + 0.45 + 5.13 + 9.10 + 0.98). Distance PME-PME 0.36; diameter PME 0.08; distance PME-ALE 0.05; distance AME-AME 0.08; diameter AME 0.05. Sternum wider than long (0.80/0.65). Habitus as in Figs 12 E–G.

Carapace yellowish, with brown radiating marks; ocular area yellowish; sternum yellowish, with little brown spots retrolaterally. Legs yellowish, patellae dark yellow, distal parts of tibiae and proximal parts of metatarsi dark brown, darker rings absent. Opisthosoma pale grey, with dark brown spots laterally and whitish spots dorsally, elongate abdomen that is pointed dorso-posteriorly. Ocular area elevated; each eye triad on top of a short, laterally directed eye-stalk, with a bunch of short macrosetae between PME (as in P. zhuchuandiani sp. nov., cf. Fig. 31 E). Thoracic furrow absent. Chelicerae as in Fig. 12 B, with a pair of proximo-lateral apophyses, a pair of black distal apophyses with two teeth each, and a pair of indistinct frontal apophyses. Pedipalps as in Figs 11 A–B; trochanter with a long ventral apophysis; femur with a dorsal apophysis proximally; procursus simple proximally but complex distally, with a small, pointed dorsal flap medially; uncus with scales; appendix pointed distally ( Fig. 12 A), embolus weakly sclerotized. Legs with short vertical setae on tibiae, metatarsi and tarsi; without spines and curved setae.

Female: Unknown.

Distribution. Indonesia (West Sumatra, type locality; Fig. 32 ).

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

Figures

FIGURE 11. Pholcus anaiensis sp. nov., holotype male. A – B. Pedipalp (A. Prolateral view; B. Retrolateral view); C – D. Distal part of procursus (C. Prolateral view, arrow points at pointed dorsal flap medially on procursus; D. Retrolateral view). a = appendix, b = bulb, e = embolus, pr = procursus, u = uncus. Scale bars: 0.10 (A – B), 0.03 (C – D).

FIGURE 12. Pholcus anaiensis sp. nov., holotype male. A. Bulbal apophyses, prolateral view; B. Chelicerae, frontal view; C – E. Habitus (C. Dorsal view; D. Ventral view; E. Lateral view). a = appendix, da = distal apophysis, e = embolus, fa = frontal apophysis, pa = proximo-lateral apophysis, u = uncus. Scale bars: 0.03 (A), 0.05 (B), 0.50 (C – E).

FIGURE 19. Pholcus zhuchuandiani sp. nov., holotype male. A – B. Pedipalp (A. Prolateral view; B. Retrolateral view); C – D. Distal part of procursus (C. Prolateral view, arrow points at sclerotized prolateral apophysis; D. Retrolateral view). a = appendix, b = bulb, e = embolus, pr = procursus, u = uncus. Scale bars: 0.10 (A – B), 0.03 (C – D).

FIGURE 20. Pholcus zhuchuandiani sp. nov., holotype male (C – F) and paratype female (A – B, G – H). A. External genitalia, ventral view, arrow points at knob; B. Vulva, dorsal view; C. Bulbal apophyses, prolateral view; D. Chelicerae, frontal view; E – H. Habitus (E, G. Dorsal view; F, H. Ventral view). a = appendix, da = distal apophysis, e = embolus, fa = frontal apophysis, pa = proximo-lateral apophysis, pp = pore plate, u = uncus. Scale bars: 0.05 (A – C), 0.10 (D), 0.50 (E – H).

FIGURE 31. Male and female ocular area, frontal view. A – B. Pholcus tharnlodensis sp. nov., holotype male (A) and paratype female (B). C – D. P. hinsonensis sp. nov., holotype male (C) and paratype female (D). E – F. P. zhuchuandiani sp. nov., holotype male (E) and paratype female (F). Scale bars: 0.10 (A – F).

FIGURE 32. Distribution records of new Pholcus species from Southeast Asia. ® Pholcus anaiensis sp. nov.; P. ballarini sp. nov.; P. cenranaensis sp. nov.; P. chiangmaiensis sp. nov.; P. gou sp. nov.; © P. hinsonensis sp. nov.; P. kaebyaiensis sp. nov.; P. kottawagamaensis sp. nov.; P. krachensis sp. nov.; P. musensis sp. nov.; © P. songkhonensis sp. nov.; ® P. taptaoensis sp. nov.; © P. tharnlodensis sp. nov.; ® P. w a n sp. nov.; ® P. zhuchuandiani sp. nov.