Philodromus uljin Jang, Lee & Kim, 2026, sp. nov.

Philodromus uljin sp. nov. Materials Type status: Holotype. Occurrence: catalogNumber: TTQXIV 0000000649; recordedBy: Chang Moon Jang, Sue Yeon Lee & Seung Tae Kim; individualCount: 1; sex: male; lifeStage: adult; occurrenceID: 07FB0366-DFEE-5A0F-9856-91448AC42D7A; Taxon: scientificName: Philodromus uljin; kingdom: Animalia; phylum: Arthropoda; class: Arachnida; order: Araneae; family: Philodromidae; Location: country: South Korea; stateProvince: Gyeongsangbuk-do; municipality: Uljin-gun; locality: Onjeong-myeon, Oeseonmi-ri, Kuju-ryeoung Pass; verbatimElevation: 552 m; verbatimCoordinates: 36°45'32.6"N 129°18'06.6"E; Identification: identifiedBy: Seung Tae Kim; Event: samplingProtocol: sweeping; eventDate: 19-06-2024; habitat: mixed forest; Record Level: type: Holotype; rights: en; institutionID: National Institute of Biological resources (NIBR) Type status: Paratype. Occurrence: catalogNumber: TTQXIV 0000000650; recordedBy: Chang Moon Jang, Sue Yeon Lee & Seung Tae Kim; individualCount: 1; sex: female; lifeStage: adult; occurrenceID: C7337C49-08A5-56D4-A0F8-5224B07C92BD; Taxon: scientificName: Philodromus uljin; kingdom: Animalia; phylum: Arthropoda; class: Arachnida; order: Araneae; family: Philodromidae; Location: country: South Korea; stateProvince: Gyeongsangbuk-do; municipality: Uljin-gun; locality: Onjeong-myeon, Oeseonmi-ri, Kuju-ryeoung Pass; verbatimElevation: 552 m; verbatimCoordinates: 36°45'32.6"N 129°18'06.6"E; Identification: identifiedBy: Seung Tae Kim; Event: samplingProtocol: sweeping; eventDate: 19-06-2024; habitat: mixed forest; Record Level: type: Paratype; language: en; institutionCode: National Institute of Biological resources (NIBR) Type status: Paratype. Occurrence: catalogNumber: NIBRIV 0000920275; recordedBy: Chang Moon Jang, Sue Yeon Lee & Seung Tae Kim; individualCount: 1; sex: female; lifeStage: adult; occurrenceID: B77EA26E-4069-5E7A-BD50-2823113A6987; Taxon: scientificName: Philodromus uljin; kingdom: Animalia; phylum: Arthropoda; class: Arachnida; order: Araneae; family: Philodromidae; Location: country: South Korea; stateProvince: Gyeongsangbuk-do; municipality: Uljin-gun; locality: Onjeong-myeon, Oeseonmi-ri, Kuju-ryeoung Pass; verbatimElevation: 552 m; verbatimCoordinates: 36°45'32.6"N 129°18'06.6"E; Identification: identifiedBy: Seung Tae Kim; Event: samplingProtocol: sweeping; eventDate: 19-06-2024; habitat: mixed forest; Record Level: language: en; institutionCode: National Institute of Biological resources (NIBR) Type status: Paratype. Occurrence: catalogNumber: KKU-ARA _ Phil _ P. uljin _ 20240619 _ 01; recordedBy: Chang Moon Jang, Sue Yeon Lee & Seung Tae Kim; individualCount: 1; sex: female; lifeStage: adult; occurrenceID: 971036D7-173B-5D85-9BB3-8A923F0E9D65; Taxon: scientificName: Philodromus uljin; kingdom: Animalia; phylum: Arthropoda; class: Arachnida; order: Araneae; family: Philodromidae; Location: country: South Korea; stateProvince: Gyeongsangbuk-do; municipality: Uljin-gun; locality: Onjeong-myeon, Oeseonmi-ri, Kuju-ryeoung Pass; verbatimElevation: 552 m; verbatimCoordinateSystem: 36°45'32.6"N 129°18'06.6"E; Identification: identifiedBy: Seung Tae Kim; Event: samplingProtocol: sweeping; eventDate: 19-06-2024; habitat: mixed forest; Record Level: institutionCode: Konkuk University (KKU) Type status: Paratype. Occurrence: catalogNumber: KKU-ARA _ Phil _ P. uljin _ 20241005 _ 02; recordedBy: Chang Moon Jang, Sue Yeon Lee & Seung Tae Kim; individualCount: 1; sex: male; lifeStage: adult; occurrenceID: 0F2FB0D6-8A42-5795-96C8-3B558D8E4A04; Taxon: scientificName: Philodromus uljin; kingdom: Animalia; phylum: Arthropoda; class: Arachnida; order: Araneae; family: Philodromidae; Location: country: South Korea; stateProvince: Gyeongsangbuk-do; municipality: Yeongyang-gun; locality: Subi-myeon, Bonsin-ri, Kuju-ryeoung Pass; verbatimElevation: 587 m; verbatimCoordinates: 36°45'32.0"N 129°17'46.6"E; Identification: identifiedBy: Seung Tae Kim; Event: samplingProtocol: sweeping; eventDate: 05-10-2024; habitat: mixed forest; Record Level: institutionCode: Konkuk University (KKU) Type status: Paratype. Occurrence: catalogNumber: KKU-ARA _ Phil _ P. uljin _ 20241005 _ 03; recordedBy: Chang Moon Jang, Sue Yeon Lee & Seung Tae Kim; individualCount: 1; sex: female; lifeStage: adult; occurrenceID: B5B81FBD-DAF9-52B1-88D3-C186EC504064; Taxon: scientificName: Philodromus uljin; kingdom: Animalia; phylum: Arthropoda; class: Arachnida; order: Araneae; family: Philodromidae; Location: country: South Korea; stateProvince: Gyeongsangbuk-do; municipality: Yeongyang-gun; locality: Subi-myeon, Bonsin-ri, Kuju-ryeoung Pass; verbatimElevation: 587 m; verbatimCoordinates: 36°45'32.0"N 129°17'46.6"E; Identification: identifiedBy: Seung Tae Kim; Event: samplingProtocol: sweeping; eventDate: 05-10-2024; habitat: mixed forest; Record Level: institutionCode: Konkuk University (KKU) Description Male (holotype). Habitus as in Fig. 2 A. Total length 3.95. Carapace 1.99 long / 1.97 wide. Eyes: AER 0.57, PER 0.85, ALE 0.09, AME 0.09, PLE 0.11, PME 0.07, ALE-AME 0.06, ALE-PLE 0.19, AME-AME 0.13, AME-PME 0.16, PLE-PME 0.18, PME-PME 0.29. Chelicera 0.72 long / 0.29 wide. Endite 0.44 long / 0.28 wide. Labium 0.28 long / 0.28 wide. Sternum 1.06 long / 1.06 wide. Legs: I 12.04 (3.11, 1.23, 2.99, 3.00, 1.70), II 14.19 (3.54, 1.31, 3.60, 3.50, 2.25), III 9.77 (2.72, 1.01, 2.25, 2.41, 1.39), IV 10.09 (2.83, 0.96, 2.35, 2.53 1.46). Palp 3.77 (1.48, 0.74, 0.69, -, 0.86). Abdomen 1.88 long / 1.31 wide. Carapace round and deep orange, longer than wide, thoracic region reddish-brown laterally, clothed densely with short blackish-brown hairs, cervical furrow and fovea indistinct, radial furrow distinct (Fig. 2 A). All eyes on eye tubercles, arranged in two rows, anterior eye row recurved and posterior eye row slightly recurved, posterior median eyes smaller than others (Fig. 2 A and C). Chelicera pale light pink and strongly developed, with two promarginal teeth. Sternum subcordate, pale light orange, convex, with brown spots scattered, clothed sparsely with short, recumbent hairs, anterior end slightly depressed, posterior tip blunt and slightly protruding between coxae IV (Fig. 2 E). Legs pale blackish-brown, clothed densely with short blackish-brown hairs, leg spination: I (femur 0-1 - 1 - 2 - 1 - 2 - 3 d / 0 v, tibia 3-2 - 3 d / 2 - 2 - 2 v, metatarsus 3-2 - 2 d / 2 - 2 - 3 v), II (femur 0-1 - 1 - 2 - 1 - 2 - 3 d / 0 v, tibia 3-2 - 3 d / 2 - 2 - 2 v, metatarsus 3-2 - 2 d / 2 - 2 - 3 v), III (femur 0-1 - 1 - 3 - 2 - 3 d / 0 v, tibia 3-2 - 3 d / 2 - 2 - 2 v, metatarsus 3-2 - 2 d / 2 - 2 - 3 v), IV (femur 0-1 - 1 - 2 - 1 - 2 - 3 d / 0 v, tibia 3-2 - 3 d / 2 - 2 - 2 v, metatarsus 3-2 - 2 d / 2 - 2 - 3 v), leg formula II-I-IV-III (Fig. 2 A). Abdomen ovoid, dusky and pale blackish-brown, clothed densely with blackish-brown hairs, dark anterolaterally, with a blackish-brown lozenge-shaped pattern anteromedially along with two pairs of orange markings, wrinkled posteriorly (Fig. 2 A). Palp (Fig. 2 J – M): tegulum elliptical; embolus filiform, embolic base thick and smooth; conductor broad and membranous; intertegular retinaculum small and spine-shaped; ventral tibial apophysis triangular, strongly sclerotised and membranous; retrolateral tibial apophysis rectangular, with an undulated tip, the middle section flat, almost uniform in width. Female (paratype). General appearance similar to male, habitus as in Fig. 2 B. Total length 5.51. Carapace: 2.07 long / 2.01 wide. Eyes: AER 0.66, PER 0.97, ALE 0.11, AME 0.09, PLE 0.11, PME 0.08, ALE-AME 0.07, ALE-PLE 0.23, AME-AME 0.15, AME-PME 0.21, PLE-PME 0.20, PME-PME 0.34. Chelicera: 0.79 long / 0.36 wide. Endite: 0.46 long / 0.27 wide. Labium: 0.31 long / 0.30 wide. Sternum: 1.08 long / 1.02 wide. Legs: I 7.05 (1.98, 0.86, 1.64, 1.54, 1.02), II 8.40 (2.41, 0.98, 2.07, 1.84, 1.10), III 6.16 (1.84, 0.77, 1.40, 1.32, 0.82), IV 6.15 (1.88, 0.71, 1.38, 1.34, 0.83). Palp: 2.49 (0.80, 0.44, 0.47, -, 0.79). Abdomen 3.34 long / 2.33 wide. Epigynum 0.30 wide. Carapace round and pale brown, longer than wide, cephalic region ivory posteriorly, thoracic region tinged with white on anterior two-thirds and dark brown laterally, clothed densely with short blackish-brown hairs, cervical and radial furrows distinct, fovea V-shaped (Fig. 2 B). All eyes on eye tubercles, arranged in two rows, anterior eye row recurved and posterior eye row slightly recurved, posterior median eyes smaller than others (Fig. 2 B and D). Chelicera pale light pink and strongly developed, with two promarginal teeth. Sternum subcordate, pale light pink, convex, with brown spots scattered, clothed sparsely with short and recumbent hairs, anterior end slightly depressed, posterior tip truncated and slightly protruding between coxae IV (Fig. 2 E). Legs pale greenish-brown, clothed densely with short blackish-brown hairs, leg spination: I (femur 0-1 - 1 - 2 - 1 - 2 - 3 d / 0 v, tibia 3-2 - 3 d / 2 - 2 - 2 v, metatarsus 3-2 - 2 d / 2 - 2 - 3 v), II (femur 0-1 - 1 - 2 - 1 - 2 - 3 d / 0 v, tibia 3-2 - 3 d / 2 - 2 - 2 v, metatarsus 3-2 - 2 d / 2 - 2 - 3 v), III (femur 0-1 - 1 - 2 - 3 d / 0 v, tibia 3-2 - 3 d / 2 - 2 - 2 v, metatarsus 3-2 - 2 d / 2 - 2 - 3 v), IV (femur 0-1 - 1 - 3 d / 0 v, tibia 3-2 - 3 d / 2 - 2 - 2 v, metatarsus 3-2 - 2 d / 2 - 2 - 3 v), leg formula II-I-III ≈ IV (Fig. 2 B). Epigynum (Fig. 2 G): epigynal atrium semi-circular and wide; median septum narrow anteriorly and broad posteriorly; anterior rim of sclerotised epigynal fold angularly curved. Internal genitalia (Fig. 2 H and I): receptaculum large and globular; globular mound indistinct; copulatory duct distinct, thick, looped and thinner than receptaculum; fertilisation duct almost horizontal. Diagnosis Philodromus uljin sp. nov. is similar to P. guiyang Long & Yu, 2002 and P. subaureolus Bösenberg & Strand, 1906, in the general shape of the genital organs and overall body appearance, but it can be easily distinguished from both congeners by the follow