Falcileptoneta sunchangensis, Seo, 2016

Seo, Bo Keun, 2016, Four new species of the genus Falcileptoneta (Araneae, Leptonetidae) from Korea, Journal of Species Research 5 (3), pp. 590-595 : 8

Falcileptoneta sunchangensis n. sp. ṪǧḦ나ffiĄŔ (ṳAE) ( Fig. 4 A­I)

Material examined. Holotype: ♂, mixed forest (35°28′ 05″N, 126°52′21″E, alt. 427 m), 3.5 km north­northwest of Baekyang Temple in Mt. Baekam, Bokheung­myeon, Sunchang­gun , Jeollabuk­do, 13 May 2006, B. K. Seo . Paratype: 5♂♂, 3$$, same data as holotype ; 1♂, mixed forest (35°29′04″N, 126°54′55″E, alt. 207 m), 1.3 km east­southeast of Naejang Temple in Mt. Naejang , other data same as holotype .

Etymology. The specific name comes from the type lo­ cality, Sunchang County.

Diagnosis. The male palp of F. sunchangensis n. sp. resembles those of F. bifurca Seo, 2015 and F. naejangensis Seo, 2015 in the shape of tarsus, and in having two retrolateral apophyses on the distal end of the tibia, but can be easily distinguished from the latters by the tibia with a simple spine­like ventral apophysis and a thick spur­like apophysis on the distal part, the large sickle­like embolus tip, and the broad retrolateral sclerite of palpal bulb ( Fig. 4 E­H).

Description. Male (holotype). Total length 1.30. Habitus as in Fig. 4A. Carapace reddish brown and 0.65 long, 0.59 wide; fovea linear and radial furrows distinct. Clypeus height 2 times of diameter of ALE. AER 0.12, PER 0.14. ALE 0.05, PME 0.04, PLE 0.07, ALE­PME 0.07, PLE­PME 0.01. Chelicera with seven promarginal teeth. Sternum 0.42 long, 0.38 wide. Labium 0.07 long, 0.13 wide. Endite bulged out medially, and longer than wide ( Fig. 4B). Leg measurements: I 4.40 (1.17, 0.23, 1.25, 1.03, 0.72), II 3.27 (0.88, 0.22, 0.85, 0.73, 0.59), III 2.78 (0.73, 0.20, 0.65, 0.64, 0.56), IV 3.82 (1.01, 0.21, 1.09, 0.86, 0.65). Palp 0.99 (0.39, 0.16, 0.17, 0.27). Leg I/c 6.77. Fem. I/c 1.80. Tib I/c 1.92. Met I/c 1.58. Pat. I+ tib. I/c 2.28. Met. I/tar. I 1.43. Met. IV/tar. IV 1.32. Leg spination pattern: Tibiae; II d0­1­1; III d0­1­0. Metatarsi; III, IV p1­0. Abdomen reddish brown, oval and 0.69 long, 0.48 wide. Palp (Fig. C­H): femur without strong spine; tibia with two retrolateral apophyses on distal end, ventral one spine­like and dorsal one thick spur­like; tarsus unbranched, with a transverse depression. Palpal bulb with an embolus and three type sclerite: tip of embolus sickle­like; prolateral sclerite narrrow leaf­like; median sclerite leaf­like; retrolateral sclerite broad, transparent, and membranous.

Female (paratype). Total length 1.29. Carapace 0.65 long, 0.57 wide. Clypeus height 1.8 times of diameter of ALE. AER 0.12, PER 0.14. ALE 0.05, PME 0.07, PLE 0.07, ALE­PME 0.08, PLE­PME 0.03. Chelicera with eight promarginal teeth. Sternum 0.42 long, 0.35 wide. Labium 0.08 long, 0.09 wide. Leg measurements: I 3.97 (1.03, 0.23, 1.11, 0.88, 0.72), II 3.08 (0.83, 0.22, 0.79, 0.65, 0.59) , III 2.63 (0.65, 0.22, 0.65, 0.60, 0.51) , IV 3.60 (0.98, 0.22, 1.00, 0.79, 0.61) . Palp 1.08 (0.34, 0.12, 0.23, 0.39). Leg I/c 6.11. Fem. I/c 1.58. Tib I/c 1.71. Met I/c 1.35. Pat. I + tib. I/c 2.06. Met. I/tar. I 1.22. Met. IV/tar. IV 1.30 . Leg spination pattern: Tibiae; I d0­0­0­1; II d0­ 1­0; III d0­1­1­0; IV r0­0­0­1. Metatarsi; I, II v0­1­0; III, IV p0­1­0, r0­1­0, v0­1­0. Abdomen oval, 0.72 long, 0.56 wide. Internal genitalia; spermatheca pear­shaped, genital duct short and loosely coiled ( Fig. 4I).

Habitat. Mixed forest.

World Distribution. Korea (Jeollabuk­do).