Pholcus worak, Jang & Bae & Lee & Yoo & Kim, 2023

Jang, Chang Moon, Bae, Yang Seop, Lee, Sue Yeon, Yoo, Jung Sun & Kim, Seung Tae, 2023, Five new species of the Pholcus phungiformes species group (Araneae, Pholcidae) from South Korea, ZooKeys 1178, pp. 97-114 : 97

publication ID

https://dx.doi.org/10.3897/zookeys.1178.104780

publication LSID

lsid:zoobank.org:pub:D469B606-78D1-48A9-90D4-863F2858AA84

persistent identifier

https://treatment.plazi.org/id/4A2C751D-7BDF-4154-8E6E-691B136E74B4

taxon LSID

lsid:zoobank.org:act:4A2C751D-7BDF-4154-8E6E-691B136E74B4

treatment provided by

ZooKeys by Pensoft

scientific name

Pholcus worak
status

sp. nov.

Pholcus worak sp. nov.

Figs 6 View Figure 6 , 8D View Figure 8

Material examined.

Holotype: South Korea • ♂; Chungcheongbuk-do, Jecheon-si, Hansu-myeon, Songgye-ri , Mt. Woraksan National Park ; 36°51.7'N, 128°5.7'E, 295 m; 10 September 2019; S.T. Kim & S.Y. Lee leg.; NIBR ##NUHGIV0000000003 GoogleMaps . Paratypes: South Korea • 4♂♂ and 5♀♀ same data as for holotype; NIBR #NUHGIV00000000032-40 GoogleMaps .

Diagnosis.

Pholcus worak sp. nov. can be easily distinguished from the other species within the P. phungiformes species group by the combination of the following characters: male - embolus slender, conspicuously long, and straight (Fig. 6H, K View Figure 6 ); procursus with large and broadly swollen ventral knee, roundly depressed dorsodistal apophysis with pointed tip (numbered 1 in Fig. 6H-J View Figure 6 ), and long membranous ventrodistal apophysis with pointed tip (numbered 2 in Fig. 6H-J View Figure 6 ). Female - epigynum with a pair of sclerotized fried egg-shaped protuberances in median portion, pore plates elliptical, slanted, and far apart from each other in internal genitalia (Fig. 6G View Figure 6 ).

Description.

Male (holotype). Habitus as in Fig. 6A View Figure 6 . Total length 5.17. Carapace: 1.72 long/1.75 wide. Eyes: AER 0.81, PER 0.86, ALE 0.20, AME 0.14, PLE 0.20, PME 0.18, ALE-PLE contiguous, ALE-AME 0.07, AME-AME 0.08, AME-PME 0.07, PME-PLE 0.05, PME-PME 0.31. Chelicera: 1.17 long/0.34 wide. Endite: 0.58 long/0.39 wide. Labium: 0.31 long/0.38 wide. Sternum: 0.87 long/1.15 wide. Legs: I 43.79 (11.03, 0.77, 11.22, 18.29, 2.48), II 29.24 (8.09, 0.59, 7.41, 11.69, 1.46), III 21.04 (6.12, 0.68, 5.10, 7.90, 1.24), IV 27.83 (8.11, 0.61, 6.97, 10.67, 1.47), tibia I L/d 58. Palp: 4.37 (0.80, 0.36, 1.31, -, 1.90). Abdomen: 3.45 long/1.52 wide.

Carapace pale yellowish brown, cephalic region with a pale blackish brown median band, thoracic region with pale blackish brown radial and marginal bands (Fig. 6A View Figure 6 ). Chelicera with three apophyses; blunt proximo-lateral apophysis protruding diagonally upward out of chelicera, small and blunt frontal apophysis protruding forward, and thick and pointed distal apophysis slightly protruding diagonally downward (Fig. 6C, D View Figure 6 ). Legs yellowish brown, retrolateral trichobothrium on tibia I at 5% proximally, tarsus I with 29 pseudosegments, femora, tibiae, and metatarsi with one or two pale blackish brown proximal and distal annuli, leg formula I-II-IV-III. Abdomen elliptical, turbid gray with a long cardiac pattern and many black irregular spots (Fig. 6A View Figure 6 ). Palp (Fig. 6H-K View Figure 6 ): trochanter with blunt and finger-like retrolatero-ventral apophysis, shorter than femur; palpal tibia with an eyebrow-shaped and rudimentary prolatero-ventral modification hidden by uncus; bulb pale yellowish brown, pocket-shaped, pseudo-appendix absent; uncus dark blackish brown and rectangular with a rounded edge having fine scales, edge finely serrated, pseudo-appendix absent; embolus slender and weakly sclerotized with some semitransparent fringed distal processes, conspicuously long and straight (Fig. 6H, K View Figure 6 ); procursus large and long, pale yellowish brown dorsally and brown with blackish brown margin ventrally, large ventral knee broadly swollen and smoothly curved, two distal apophyses present, dorsodistal apophysis roundly depressed with a pointed tip (numbered 1 in Fig. 6H-J View Figure 6 ) and membranous ventrodistal apophysis long with a pointed tip (numbered 2 in Fig. 6H-J View Figure 6 ), one thin and short with two short and spike like dorsal spines present on the round ridge (Fig. 8D View Figure 8 ).

Female (paratype). General appearance similar to male, habitus as in Fig. 6B View Figure 6 . Total length 5.33. Carapace: 1.72 long/1.86 wide. Eyes: AER 0.75, PER 0.83, ALE 0.21, AME 0.14, PLE 0.20, PME 0.16, ALE-PLE contiguous, ALE-AME 0.04, AME-AME 0.07, AME-PME 0.09, PME-PLE 0.06, PME-PME 0.31. Chelicera: 1.08 long/0.34 wide. Endite: 0.56 long/0.32 wide. Labium: 0.33 long/0.39 wide. Sternum: 0.86 long/1.17 wide. Legs: I 39.33 (9.81, 0.70, 10.14, 16.42, 2.26), II 27.04 (7.34, 0.69, 6.91, 10.60, 1.50), III 19.96 (5.69, 0.64, 4.95, 7.51, 1.17), IV 27.20 (7.81, 0.66, 6.92, 10.29, 1.52), tibia I L/d 49. Palp: 1.62 (0.50, 0.21, 0.32, -, 0.59). Abdomen: 3.61 long/1.74 wide. Epigynum: 1.17 wide.

Legs yellowish brown, femora, tibiae, and metatarsi with one or two pale blackish brown proximal and distal annuli, leg formula I-IV≒II-III. Epigynum (Fig. 6E, F View Figure 6 ): sclerotized, anterior epigynal plate strongly protruding, anterior arch with median portion slightly curved, anterior epigynal plate and posterior epigynal plate far apart, both sides of median portion with a pair of sclerotized fried egg-shaped protuberances; small and short knob with a blunt tip. Internal genitalia (Fig. 6G View Figure 6 ): pore plates elliptical, slanted, and far apart from each other.

Variation.

Tibia I in four paratype males (NIBR #NUHGIV00000000032-35): 12.98 ± 0.76 (13.74, 12.48, 12.18, 13.50). Tibia I in other four paratype female (NIBR #NUHGIV00000000037-40): 9.91 ± 0.40 (10.04, 9.89, 9.38, 10.33).

Habitat.

Rock walls and under rocks in a mountainous mixed forest (Fig. 1E View Figure 1 ).

Distribution.

South Korea (Mt. Woraksan, Chungcheongbuk-do) (Fig. 1A View Figure 1 ).

Etymology.

The specific name is a noun in apposition referring to the type locality, Mt. Woraksan.

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Pholcidae

Genus

Pholcus