Arcuphantes longiconvolutus, 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 : 277

Arcuphantes longiconvolutus n. sp.

Oiḡ나IJḍljHḑ (ṉÿ) ( Figs. 6H , 14 G-I)

Material examined. Holotype: $, mixed forest (38°09 ʹ 58 ʺ N, 128°22 ʹ 40 ʺ E, alt. 475 m), Buk-myeon, Inje-gun, Gangwon-do, 28 July 2014, B. K. Seo.

Etymology. The specific name is a Latin participle “ longiconvolutus ” (long coiled), referring to the shape of epigynum scape.

Diagnosis. The new species is similar to A. rarus Seo, 2013 in the shape of epigynum, but different from the latter by the abdominal pattern, the shape of posterior median plate, the coiling of scape, and the shape of lateral lobes ( Figs. 6H , 14 G-I).

Description. Female (holotype). Total length 2.64. Habitus as in Figure 6H . Carapace reddish brown, 1.28 long, 1.12 wide. Clypeus height 2.5 times of diameter of AME. AER 0.46, PER 0.49. Both eye rows recurved in dorsal view. AME 0.08, ALE 0.10, PME 0.10, PLE 0.09, AME-AME 0.01, AME-ALE 0.08, PME-PME 0.07, PME-PLE 0.07, AME-PME 0.09, and ALE-PLE 0.01. Median ocular quadrangle, posterior side>height>anterior side (20:19:12). Chelicera with three teeth on each margin. Sternum 0.72 long, 0.78 wide. Labium 0.25 wide. Abdomen oval and dark brown, with a white round stripe along margin of dorsum and two white medial dots, 1.68 long, 1.00 wide. Epigynum: scape long coiled; posterior median plate adhere to basal plate; distal part of scape with longish lateral lobes ( Fig. 14 G-I).

Habitat. Mixed forest.

World Distribution. Korea (Gangwon-do).

Deposition. NIBR.

Identifier. Bo Keun Seo.

Figures

Fig. 6. Habitus of linyphiid species (II): A - Agyneta furcula n. sp., male; B - idem, female; C - Agyneta insulana Tanasevitch, 2000, male; D - Arcuphantes chiakensis n. sp., male; E - idem, female; F - Arcuphantes chilboensis n. sp., male; G - idem, female; H - Arcuphantes longiconvolutus n. sp., female; I - Arcuphantes namweonensis n. sp., male; J - Arcuphantes pennatoides n. sp., male; K - idem, female; L - Arcuphantes pyeongchangensis n. sp., male; M - Collis flavus n. sp., male; N - idem, female; O - Collis pusillus n. sp., male; P - idem, female; Q - Collis silvaticus n. sp., male; R - Doenitzius minutus n. sp., female; S - Nippononeta bituberculata n. sp., male; T - idem, female. Scale bars: 0.5 mm.

Fig. 14. Arcuphantes chilboensis n. sp. (A-F) and Arcuphantes longiconvolutus n. sp.(G-I): A - male left palp, retrolateral view; B - idem, prolateral view; C - embolic division, ventral view; D, G - epigynum, ventral view; E, H - idem, posterior view; F, I - idem, lateral view. Scale bars: 0.1 mm.