Phrurolithus pennatoides, 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 : 287

Phrurolithus pennatoides n. sp.

날fflPIJHḑ (ṉÿ) ( Fig. 20 A-H)

Material examined. Holotype: ♂, mixed forest (37°30 ʹ 30 ʺ N, 130°48 ʹ 42 ʺ E, alt. 116 m), Seo-myeon, Ulleung-gun , Gyeongsangbuk-do, 25 August 2006, B. K. Seo . Paratypes: 1$, chestnut forest ( Fagus engleriana ) (37°30 ʹ 57 ʺ N, 130°52 ʹ 11 ʺ E, alt. 385 m), Buk-myeon, Ulleung-gun , Gyeongsangbuk-do, 24 August 2006, B. K. Seo .

Etymology. The specific name is a Latin adjective “ pennatus ” (winged) having the suffix “- oides ” (resembling).

Diagnosis. The new species is very similar to P. pennatus Yaginuma, 1967 in the shape of male palp, but can be easily distinguished from the latter by the retrolateral tibial apophysis and copulatory ducts of female genitalia ( Fig. 20 D-E, H).

Description. Male (holotype). Total length 3.15. Habitus as in Figure 20A . Carapace brown, 1.40 long, 1.15 wide. Clypeus height 1.7 times of diameter of AME. AER 0.39, PER 0.42; AER recurved and PER straight in dorsal view. AME 0.08, ALE 0.10, PME 0.09, PLE 0.09, AME-AME 0.05, AME-ALE 0.01, PME-PME 0.05, PME-PLE 0.04, AME-PME 0.07, and ALE-PLE 0.05. Median ocular quadrangle, height>posterior side>anterior side (19:17:16). Chelicera with two teeth on each margin. Sternum 0.83 long, 0.69 wide. Labium 0.17 long, 0.22 wide. Leg measurements: I 5.84 (1.50, 0.50, 1.54, 1.36, 0.94), II 4.72 (1.20, 0.44, 1.14, 1.08, 0.86), III 4.22 (1.14, 0.42, 0.88, 1.08, 0.70), IV 6.36 (1.72, 0.52, 1.50, 1.68, 0.94). Leg I/c 4.17. Fem. I/c 1.07. Tib. I/c 1.10. Met. I/c 0.97. Pat. I + tib. I/c 1.46. Met. I/tar. I 1.45. Met. IV/tar. IV 1.79. Leg spination pattern: Femur; I d1-1, p1-1-1-1-0-0; II-IV d1-0. Tibia; I v2-2-2-2-2-2- 2; II v2-2-2-2-2-2. Metatarsus; I v2-2-2-2-2; II v1-2-2- 2-1. Abdomen elongate and reddish brown with yellow margin except anterior margin, and 1.80 long, 0.95 wide. Palp ( Fig. 20 C-E): tibia with a curved retrolateral apophysis; embolus very short.

Female (paratype). Total length 4.45. Habitus as in Figure 20B . Carapace 1.65 long, 1.35 wide. Clypeus height same as diameter of AME. AER 0.46, PER 0.48. AME 0.12, ALE 0.13, PME 0.09, PLE 0.12, AME-AME 0.04, AME-ALE contiguous, PME-PME 0.05, PME-PLE 0.05, AME-PME 0.09, and ALE-PLE 0.04. Median ocular quadrangle, height>anterior side>posterior side (11:10:9). Chelicera with three promarginal and two retromarginal teeth. Sternum 1.00 long, 0.82 wide. Labium 0.17 long, 0.29 wide. Leg measurements: I 6.56 (1.62, 0.58, 1.76, 1.48, 1.12), II 5.34 (1.36, 0.54, 1.30, 1.18, 0.96), III 4.66 (1.22, 0.50, 1.02, 1.18, 0.74), IV 7.14 (1.92, 0.60, 1.68, 1.96, 0.98). Leg I/c 3.98. Fem. I/c 0.98. Tib. I/c 1.07. Met. I/c 0.90. Pat. I + tib. I/c 1.42. Met. I/tar. I 1.32. Met. IV/tar. IV 2.00. Leg spination pattern: Femur; I d1-1, p1-1-1-1-0-0; II d1-1; III-IV d1-0. Tibia; I v2-2- 2-2-2-2-2-2; II v2-2-2-2-2-2-2; IV v0-0-0-0-2. Metatarsus; I v2-2-2-2-5; II v1-2-2-2-2. Abdomen dirty yellow with anterior medial patch chitinized, and 2.75 long, 1.95 wide. Epigynum: ventral plate with a pair of copulatory openings anteriorly; internal genitalia with a pair of spermathecae, thin copulatory ducts, and short fertilization ducts ( Fig. 20 F-H).

Habitat. Mixed forest.

World Distribution. Korea (Ulleung Island, Gyeongsangbuk-do).

Deposition. NIBR.

Identifier. Bo Keun Seo.

Figures

Fig. 20. Phrurolithus pennatoides n. sp. (A-H) and Xysticus audax (Schrank, 1803) (I-K): A, I - male habitus; B - female habitus; C, K - male left palp, ventral view; D, J - idem, retrolateral view; E - idem, dorsal view; F-G - epigynum; H - internal genitalia. Scale bars: 0.5 mm (A-C), 0.1 mm (D-J).