Xysticus audax ( Schrank, 1803 )

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 : 288-289

Xysticus audax ( Schrank, 1803)

ẇöNjHḑ (ṉÿ) ( Fig. 20 I-K)

Aranea audax Schrank, 1803: 235

Xysticus audax Ono, 1988: 117 ; Ono, 2009: 517.

Material examined. ♂, mixed forest (36°45 ʹ 41 ʺ N, 129°17 ʹ 25 ʺ E, alt. 545 m), Subi-myeon, Yeongyang-gun , Gyeongsangbuk-do, 23 May 2015, B. K. Seo .

Diagnosis. This species is very similar to X. cristatus ( Clerck, 1757) in the general appearance, but can be easily distinguished from the latter by the shape of embolic tip male palp ( Fig. 20 J-K).

Description. Male. Total length 4.60. Habitus as in Figure 20I . Carapace dark brown with white chevron mark, 2.55 long, 2.30 wide. Clypeus height 1.3 times of diameter of AME. AER 1.54, PER 1.56. Both eye row recurved in dorsal view. AME 0.16, ALE 0.30, PME 0.20, PLE 0.20, AME-AME 0.34, AME-ALE 0.16, PME-PME 0.36, PME-PLE 0.36, AME-PME 0.26, and ALE-PLE 0.26. Median ocular quadrangle, posterior side>anterior side = height (38:33). Both margins of chelicera without tooth. Sternum 1.26 long, 1.04 wide. Labium 0.40 long, 0.32 wide. Leg measurements: I 8.95 (2.65, 1.20, 1.95, 2.00, 1.15), II 8.80 (2.65, 1.15, 1.90, 1.95, 1.15), III 5.60 (1.85, 0.85, 1.10, 1.00, 0.80), IV 5.95 (1.90, 0.80, 1.20, 1.20, 0.85). Leg I/c 3.51. Fem. I/ c 1.04. Tib. I/c 0.76. Met. I/c 0.78. Pat. I + tib. I/c 1.24. Met. I/tar. I 1.74. Met. IV/tar. IV 1.41. Abdomen rhombus-like, dark brown, and 2.65 long, 2.05 wide; dorsum with a pair of white lines on anterior margins and three transverse white lines posteriorly. Palp ( Fig. 20 J-K): tibia with blunt ventral and retrolateral apophyses; three tegular apophysis well developed; embolus circular with tip curved retrolaterally.

Habitat. Mixed forest.

World Distribution. Palearctic region ( Korea; 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).