Arctosa labiata Tso & Chen, 2004

Jang, Chang Moon, Bae, Yang Seop, Yoo, Jung Sun & Kim, Sue Yeon Lee and Seung Tae, 2023, Three new records of wolf spiders (Araneae: Lycosidae) from Korea, Journal of Species Research 12 (3), pp. 224-228 : 225-226

Arctosa labiata Tso & Chen, 2004

ḏẃǜŔ대ĄṘ (ljffi) ( Fig. 1 )

Arctosa labiata Tso & Chen, 2004: 401 , f. 6-10.

Materials examined. 2♂, Mt. Songnisan National Park, Jangam-ri, Hwabuk-myeon , Sangju-si , Gyeongsangbuk-do (36.58N, 127.89E, alt. 406 m), 2 August 2019, S. T. Kim & S.Y. Lee leg.

Description. Male. Total length 4.92. Carapace: 2.08 long / 1.97 wide. Anterior eye row 0.42. Posterior eye row 0.55. Chelicera: 0.93 long / 0.73 wide. Endite: 0.73 long / 0.30 wide. Labium: 0.25 long / 0.30 wide. Sternum: 1.20 long / 1.00 wide. Legs: I 5.75 (1.70, 2.10, 1.17, 0.78) / II 5.04 (1.50, 1.62, 1.22, 0.70) / III 5.08 (1.58, 1.65, 1.15, 0.70) / IV 7.43 (2.00, 2.28, 2.10, 1.05). Abdomen: 2.13 long / 1.50 wide. Palp: 0.72 (0.98, 0.92, -, 0.72).

Habitus as in Fig. 1A . Carapace ovoid, dark yellowish brown, longer than wide, cervical and radial furrows distinct, longitudinal fovea needle-shaped ( Fig. 1A ). Eight eyes, posterior eye row longer than anterior eye row ( Fig. 1B ). Chelicera strongly developed with three small promarginal teeth and three small retromarginal teeth. Sternum heart-shaped, pale and turbid yellowish brown, margin covered sparsely with long black hairs, posteri- or end blunt unprotruding between coxae of leg IV ( Fig. 1C ). Legs stout and strongly developed, turbid yellowish brown, broad and vague annuli present, leg formula IV-I-III-II ( Fig. 1A ). Palp: cymbium with two thick apical setae; median apophysis large with a pointed tip, upper half almost black, anterior margin concave, stretched laterally and curved ventrally; conductor round and membranous; terminal apophysis large with a pointed tip ( Fig. 1D- G ).

Habitat. The species was collected by hand in mixed forest leaf litter in mountainous terrain.

Distribution. Korea (new record), Taiwan.

Figures

Fig. 1. Arctosa labiata Tso & Chen, 2004, male.A. Habitus in dorsal view; B. Eye area from above; C. Sternum; D. Palp in prolateral view; E. Palp in ventral view; F. Palp in retrolateral view; G. Palp in dorsal view (CS, cymbial setae, MA, median apophysis; St, subtegulum; T, tegulum; TA, terminal apophysis). Scale bars in mm.