Pelecopsis montana, Seo, 2018

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 : 263-264

Pelecopsis montana n. sp.

üPnjḍljHḑ (ṉÿ) ( Figs. 5M , 10 A-F)

Material examined. Holotype: ♂, mixed forest beside lake (35°25 ʹ 43 ʺ N, 126°50 ʹ 34 ʺ E, alt. 130 m), Bukha-myeon, Jangseong-gun, Jeollanam-do, 12 May 2006, B. K. Seo. Paratypes: 1♂, same data as holotype ; 1♂, mixed forest in Island (34°48 ʹ 28 ʺ N, 128°43 ʹ 04 ʺ E, alt. 157 m), Irun-myeon, Geoje-si, Gyeongsangnam-do, 12 July 2013, B. K. Seo .

Etymology. The specific name is a Latin adjective “ montana ” (mountainous), referring to the habitat of the type specimens.

Diagnosis. The new species resembles P. parallela ( Wider, 1834) in the male carapace, the embolus shape and dorsal apophysis of male palp, but easily distinguished from the latter by the shape of suprategular apophysis and terminal apophysis ( Fig. 10 C-E).

Description. Male (holotype). Total length 1.11. Habitus as in Figure 5M . Carapace height brown, 0.53 long, 0.44 wide; cephalon elevated, with a pair of ocular sulci under PMA ( Fig. 10 A-B). Clypeus height 3.2 times of diameter of AME. AER 0.17, PER 0.20. AER recurved and PER procurved in dorsal view. AME 0.03, ALE 0.05, PME 0.04, PLE 0.05, AME-AME contiguous, AME-ALE 0.01, PME-PME 0.04, PME-PLE 0.08, AME-PME 0.10, and ALE-PLE contiguous. Median ocular quadrangle, height>posterior side>anterior side (12:9:5). Chelicera with six promarginal and three minute retromarginal teeth. Sternum 0.35 long, 0.33 wide. Labium 0.10 wide. Leg measurements: I lost, II 1.37 (0.39, 0.16, 0.30, 0.26, 0.26), III 1.17 (0.31, 0.13, 0.25, 0.23, 0.25), IV 1.50 (0.43, 0.14, 0.38, 0.29, 0.26). Chaetotaxy 1-1- 1-1 (male paratype). Tm 1 0.33 (male paratype), Tm IV absent. Abdomen oval and dirty brown, and 0.66 long, 0.43 wide. Palp ( Fig. 10 C-F): tibia with large pointed dorsal apophysis; embolus curled; suprategular apophysis membranous and twisted; terminal apophysis membranous, long and narrow.

Habitat. Mixed forest.

World Distribution. Korea (Gyeongsangnam-do, Jeollanam-do) .

Deposition. NIBR.

Identifier. Bo Keun Seo.

Figures

Fig. 5. Habitus of linyphiid species (I): A -Cnephalocotes ferrugineus n. sp., male; B - idem, female; C - Diplocephaloides falcatus n. sp., male; D - idem, female; E - Hylyphantes nigritus (Simon, 1881), male; F - idem, female; G - Hypselistes australis Saito and Ono, 2001, female; H - Metopobactrus cornis n. sp., male; I - Pelecopsis bigibba n. sp., male; J - idem, female; K - Pelecopsis brunea n. sp., male; L - idem, female; M - Pelecopsis montana n. sp., male; N - Tapinocyba parva n. sp., male; O - idem, female; P - Tapinocyba subula n. sp., male; Q - idem, female; R - Walckenaeria supercilia n. sp., male; S - Diplostyla concolor(Wider, 1834), male; T - idem, female. Scale bars: 0.5 mm.

Fig. 10. Pelecopsis montana n. sp. (A-F) and Tapinocyba parva n. sp. (G-N): A - male head, lateral view; B - idem, frontal view; C, G - male left palp, retrolateral view; D, H - prolateral view; E, J - idem, ventral view; I - idem, tip of prolateral tibial apophysis; K - idem, tibial apophysis, dorsal view; L-M - epigynum; N - internal genitalia. Scale bars: 0.01mm (I), 0.1 (rest).