Cybaeus parvus, Lee & Yoo & Kim, 2017

Lee, Sue Yeon, Yoo, Jung Sun & Kim, Seung Tae, 2017, Three new species and four new records of the families Cybaeidae and Gnaphosidae (Araneae) from Korea, Journal of Species Research 6, pp. 114-124 : 116

Cybaeus parvus n. sp.

꼬ŔƎffiĄḍ (ljḓ) ( Fig. 2 A-H)

Material examined. Holotype: ♂, mixed forest (36°48 ʹ 30 ʺ N, 129°05 ʹ 19 ʺ E, alt. 1121 m), 1 km west northwest of the summit of Mt. Ilweol, Cheonggi-myeon, Yeongyang-gun , Gyeongsangbuk-do, 23 July 2010, J. C. Lim . Paratype: 1♂, same data as holotype ; 2♂♂, mixed forest (36°51 ʹ 28 ʺ N, 129°07 ʹ 05 ʺ E, alt. 655 m), 6.4 km north northeast of the summit of Mt. Ilweol, Socheon-myeon, Bonghwa-gun , Gyeongsangbuk-do, 23 July 2010, J. C. Lim .

Etymology. The specific name is a Latin adjective meaning “small” and refers to the size of the specimen.

Diagnosis. The male of C. parvus n. sp. is similar to that of C. miyagiensis Ihara, 2004 in the bulb of the male palp, but different from the latter by the conductor tip of palp and the patellar apophysis ( Fig. 2 B-H).

Description. Male (holotype). Total length 2.55. Habitus as in Figure 2A. Carapace deep yellow; 1.45 long, 1.03 wide; cervical groove, median furrow and radial grooves distinct; clypeus height 4 times of diameter of AME. AER 0.25, PER 0.36; AER and PER slightly recurved in dorsal view. AME 0.03, ALE 0.08, PME 0.05, PLE 0.09, AME-AME 0.03, AME-ALE 0.01, PME-PME 0.07, PME-PLE 0.05, AME-PME 0.05, and ALE-PLE 0.04. Median ocular quadrangle, height>posterior side>anterior side (16:14:6). Chelicera with three promarginal and nine minute retromarginal teeth. Sternum 0.85 long, 0.74 wide. Labium 0.20 long, 0.26 wide. Leg measurements: I 4.39 (1.13, 0.48, 1.05, 0.93, 0.80), II 3.96 (1.00, 0.43, 0.90, 0.88, 0.75), III 3.61 (0.95, 0.40, 0.75, 0.88, 0.63), IV 4.82 (1.28, 0.43, 1.13, 1.23, 0.75). Leg I/c 3.03. Fem. I/c 0.78. Tib I/c 0.72. Met I/c 0.64. Pat. I + tib. I/c 1.11. Met. I/tar. I 1.16. Met. IV/tar. IV 1.64. Leg spination pattern: Femora; I, II d1-1, p0-0-0-1; III d1-1-1, p0- 0-1, 0-0-1; IV d1-1-0, p0-0-1, r0-0-1. Tibiae; I v2-2; II p0-0-1, v1-1; III d1-1, p1-1, r1-1, v1-2; IV d1-0-0-0, p1- 1, r1-1-1, v1-2-2. Metatarsi; I p0-0-1, v2-2-2; II p1-1, v1-2-2; III d0-1-0, p1-1-2, r1-2, v2-2-2; IV p1-2-2, r1-1- 2, v2-2-2. Abdomen oval, pale gray, and 1.25 long, 0.86 wide. Palp ( Fig. 2 B-H): tibia longer than patella; patella apophysis with two small conical teeth, finger-like; embolus short and slender; conductor tip directed posteriorly.

Habitat. Mixed forest.

World Distribution. Korea (Gyeongsangbuk-do).