Hygrolycosa umidicola Tanaka, 1978

Kim, Seung-Tae & Yoo, Jung Sun, 2019, Two newly recorded wolf spiders with one new species (Araneae, Lycosidae) from Korea, Journal of Species Research 8 (3), pp. 283-287 : 285-287

Hygrolycosa umidicola Tanaka, 1978

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Hygrolycosa umidicola Tanaka, 1978: p. 14 , 16, f. 1-6; Yaginuma, 1986: p. 169, f. 92; Tanaka, 1990: p. 123, f. 1-4; Tanaka, 2009: p. 229, f. 40-41; Kim, Ye & Kim, 2015: 29, f. 1-5 [“uncertain” after Yoo et al., 2015: 5].

Material examined. 2 females and 3 males: Songjeong-ri , Samsan-myeon, Haenam-gun, Jeollanam-do, Korea (34°31 ʹ 45 ʺ N, 126°34 ʹ 10 ʺ E), 07.vi.2015 (S. T. Kim) .

Measurements (female/male). Total length 7.95/6.45 (habitus). Carapace 3.20/3.20 long, 2.95/2.37 wide. ALE 0.13/0.12, AME 0.15/0.14, PLE 0.20/0.23, PME 0.25/ 0.23; ALE-AME almost contiguous/0.03, AME-AME 0.09/0.08. Chelicera 1.32/1.30 long, 0.65/0.50 wide. Endite 0.90/0.70 long, 0.60/0.45 wide. Labium 0.50/0.47 long, 0.42/0.39 wide. Sternum 1.60/1.40 long, 1.30/1.23 wide. Legs: I, 9.41/8.84 (2.50/2.44, 3.52/3.33, 2.11/1.92, 1.28/1.14); II, 9.28/8.68 (2.56/2.44, 3.39/3.22, 2.11/1.87, 1.22/1.14); III, 8.83/8.16 (2.56/2.34, 3.07/2.85, 2.11/1.92,

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1.09/1.04); IV, 11.46/10.97 (3.01/2.86, 3.84/3.80, 3.20/3.02, 1.41/1.30). Palp 4.67/3.85 (1.66/1.30, 1.79/1.51, -, 1.22/1.04). Abdomen 4.15/3.10 long, 2.90/2.70 wide. Epigyne 0.78 long, 1.06 wide.

Description. Female: Carapace light yellowish brown, oval, longer than wide, a dark yellowish brown median stripe extended to fovea and a pair of lateral stripes in head region, a pair of dark yellowish brown band extend- ed from PLE to the end of thoracic region, a pair of blackish brown lateral stripes in thoracic region. Longitudinal fovea needle-shaped ( Fig. 2A). AME larger than ALE, AME separated from each other by the diameter of AME, AME separated from ALE by about a half diameter of AME, AER slightly recurved from frontal view ( Fig. 2C). Clypeus blackish brown without marking. Chelicerae yellowish brown, dorsal base with two short black stripes longitudinally, 3 promarginal teeth and 3 retromarginal teeth ( Fig. 2D). Endite dull yellowish brown. Labium dull yellowish brown with blackish brown margin. Sternum shield-shaped with pointed tip, longer than wide ( Fig. 2D). Legs stout and strongly developed, yellowish brown, mottled, each segment with conspicuous spines. Abdomen ovoid, blackish brown, anterior part with cardiac pattern, no particular pattern visible, longer than wide ( Fig. 2A). Epigyne elliptical and swollen with a transverse ‘U-shaped’ chitinous plate at lower part, median septum thick, spermathecae visible through integument laterally ( Fig. 2F).

Male: Similar to female, smaller and darker than female. Carapace blackish brown ( Fig. 2B). Legs shorter and lighter than female. Palp yellowish brown with hookshaped median apophysis, base of median apophysis ( Fig. 2J), palpal tibia longer than tarsus ( Fig. 2G- I).

Distribution. Korea (confirmed), Japan.

Remarks. This species was collected using a pitfall trap on a ridge between rice fields and seem to prefer habitats with relatively high humidity.