Pholcus jindongensis, Seo, 2018

Seo, Bo Keun, 2018, New species and records of the spider families Pholcidae, Uloboridae, Linyphiidae, Theridiidae, Phrurolithidae, and Thomisidae (Araneae) from Korea, Journal of Species Research 7 (4), pp. 251-290 : 252

Pholcus jindongensis n. sp.

ŭǭșỢHḑ (ṉÿ) ( Figs. 1 A-B, 2A-F)

Material examined. Holotype: ♂, mixed forest (37°58 ʹ 15 ʺ N, 128°25 ʹ 39 ʺ E, alt. 452 m), Jindong-ri, Girin-myeon, Inje-gun, Gangwon-do, 23 September 2009, S. Y. Kim. Paratypes: 7♂♂, 4$$, same data as holotype .

Etymology. The specific name comes from the type lo- cality, Jindong Village.

Diagnosis. The new species is similar to P. lingulatus Gao, Gao and Zhu, 2002 in the spines on the distal part of procursus ridge, but can be distinguished from the latter by the distal processes of the procursus, uncus, and the genitalia of female ( Fig. 2 A-F).

Description. Male (holotype). Total length 5.50. Habitus as in Figure 1A . Carapace 1.70 long, 1.80 wide, circular and yellow, with brown radiated stripes. Clypeus height 4.8 times of diameter of AME. AER 0.66, PER 0.73. AME 0.13, ALE 0.18, PME 0.17, PLE 0.18, AME-AME 0.05, AME-ALE 0.04, PME-PME 0.22, PME-PLE 0.04, AME-PME 0.08, and ALE-PLE 0.03. Median ocular quadrangle, posterior side>height>anterior side (37:27:21). Sternum 0.88 long, 1.03 wide. Labium 0.35 wide. Leg measurements: I 50.20 (12.70, 0.70, 12.70, 21.70, 2.40), II 33.50 (9.30, 0.70, 8.50, 13.30, 1.70), III 22.10 (6.50, 0.60, 5.40, 8.30, 1.30), IV 29.50 (8.60, 0.60, 7.30, 11.50, 1.50). Leg I/c 29.53. Fem. I/c 7.47. Tib. I/ c 7.47. Met. I/c 12.76. Pat. I + tib. I/c 7.88. Met. I/tar. I 9.04. Met. IV/tar. IV 7.67. Abdomen 3.70 long, 1.70 wide, and cylindrical; dorsum yellow with brown dots. Palp ( Fig. 2 A-D): trochanter with a long blunt apophysis; procursus with four membranous and sclerotized processes distally, and two long spines on distal part of longitudinal ridge; bulb with round uncus, embolus with feather-like tip, and very small appendix.

Female (paratype). Total length 5.80. Habitus as in Figure 1B . Carapace 1.70 long, 1.60 wide. Clypeus height 6.1 times of diameter of AME. AER 0.62, PER 0.68. AME 0.10, ALE 0.20, PME 0.16, PLE 0.17, AME-AME 0.05, AME-ALE 0.05, PME-PME 0.21, PME-PLE 0.03, AME-PME 0.08, and ALE-PLE 0.01. Median ocular quadrangle, posterior side>height>anterior side (35:25:19). Sternum 0.80 long, 1.00 wide. Labium 0.33 wide. Leg measurements: I 33.1. (8.30, 0.70, 8.40, 13.50, 2.20), II 23.50 (6.40, 0.70, 5.90, 9.00, 1.50), III 17.40 (5.00, 0.60, 4.20, 6.50, 1.10), IV 23.30 (6.80, 0.60, 5.80, 8.70, 1.40). Leg I /c 19.47. Fem. I /c 4.88. Tib. I /c 4.94. Met. I /c 7.94. Pat. I + tib. I/c 5.35. Met. I /tar. I 6.14 .

Met. IV/tar. IV 6.21. Abdomen 4.90 long, 2.30 wide, and elongate. Epigynum: anterior plate with medial projection posteriorly; posterior plate with a small knop; internal genitalia with a pair of pore plates ( Fig. 2 E-F).

Habitat. Mixed forest.

World Distribution. Korea (Gangwon-do).

Deposition. NIBR.

Identifier. Bo Keun Seo.

Figures

Fig. 1. Habitus of five Pholcus species: A - P. jindongensis n. sp., male; B - idem, female; C - P. piagolensis n. sp., male; D - idem, female; E - P. pyeongchangensis n. sp., male; F - idem, female; G - P. seorakensis n. sp., male; H - idem, female; I - P. uiseongensis n. sp., male; J - idem, female. Scale bars: 0.5 mm.

Fig. 2. Pholcus jindongensis n. sp.(A-F) and Pholcus piagolensis n. sp.(G-L): A, G - male left palp, retrolateral view; B, H - idem, prolateral view; C, I - idem, genital bulb and procursus, dorsal view; D, J - idem, embolus and uncus, retrolateral view; E, K - epigynum; F, L - internal genitalia. Scale bars: 0.5 mm (A-C, G-I), 0.1 mm (D-F, J-L).