Orcevia pakse Yu & Zhang, 2023

Yu, Kun, Maddison, Wayne P. & Zhang, Junxia, 2023, Taxonomic revision of Orcevia Thorell, 1890, with description of fifteen new species (Araneae, Salticidae, Euophryini), Zootaxa 5384 (1), pp. 1-79 : 13

Orcevia pakse Yu & Zhang , sp. nov. (巴DZĸ尔¤)

Figs 189–198 , 277

Type material. Holotype: ♂ ( MHBU-ARA-00023557 ), LAOS: Pakse, Tad Fane Waterfall , 20 November 2012, leg. F. Zhang, C. Zhang & Z. Gao. Paratype: 1♂ ( MHBU-ARA-00023558 ), LAOS: Pakse, Tad E Tu Waterfall , 16 November 2012, leg. F. Zhang.

Etymology. The specific epithet is from the type locality; noun in apposition.

Diagnosis. The new species resembles O. deelemanae sp. nov. in the flat tip of RTA, but differs in the longer length of RTA and the smaller lobe-like protrusion of tegulum ( Figs 193 , 291 ).

Description. Male (holotype). Habitus as shown in Figs 189–190 . Carapace length 2.52; abdomen length 2.20; measurements of eyes: AME 0.43, ALE 0.25, PME 0.08, PLE 0.27; measurements of legs: I 5.17 (1.52, 0.99, 1.26, 0.89, 0.51), II 3.53 (1.16, 0.62, 0.69, 0.64, 0.42), III 3.55 (1.24, 0.57, 0.70, 0.63, 0.41), IV 4.11 (1.33, 0.55, 0.93, 0.84, 0.46); leg formula 1432. Carapace dark, dorsal abdomen brown, ventral abdomen, and legs light except melanic area present on distal half of femora and tibiae of legs III–IV; cephalon covered by pale yellow setae, dorsal abdomen covered with pale setae dense marginally and relatively sparse centrally.

Palp ( Figs 191–193 ): embolus slender, S-shaped in ventral view and without apophysis, basal part of embolus without grooves along extending direction of embolus; apophysis on embolic disc sharp; RTA rather long, bent basally, lobe on tip of RTA small and indistinct, tip of RTA relatively flat.

Female. Unknown.

Distribution. Laos (Pakse).

Figures

FIGURES 189–198. Orcevia pakse Yu & Zhang, sp. nov., holotype male. 189–190. Habitus; 191–193; 195–196. Palp; 194. Palpal femur; 197. Endites; 198. Palpal tibia; in dorsal (189), ventral (190–191, 195, 197), prolateral (192, 198) and retrolateral (193–194, 196) view.Abbreviations:AE, apophysis of embolic disc; E, embolus; ED, embolic disc; LPT, lobe like protrusion of tegulum; pH, pro-ventral hump of male palpal tibia; RTA, retrolateral tibial apophysis; SR, salticid radix; TL, tegular lobe.

FIGURES 274–286. Comparison of Orcevia spp., ventral view of palp (274–281) and retrolateral view of RTAs (282–286). 274, 282. O. deelemanae Yu & Zhang, sp. nov.; 275, 283. O. keyserlingi Thorell, 1890; 276. O. mercuryi Yu, Maddison & Zhang, sp. nov.; 277. O. pakse Yu & Zhang, sp. nov.; 278, 285. O. meinei Yu, Maddison & Zhang, sp. nov.; 279, 284. O. eucola Thorell, 1890, modified from Prószyński (1984); 280, 286. O. timburtoni Yu, Maddison & Zhang, sp. nov.; 281. O. proszynskii (Song, Gu & Chen, 1988). Black arrows indicate the lobe with small denticles on tip of RTA.

FIGURES 287–293. Orcevia spp., top view of tip of RTA (287–291; with arrows indicating the lobe with small denticles on tip of RTA) and pattern of female leg IV (292–293; with arrows indicating boundaries of melanic area). 287. O. mercuryi Yu, Maddison & Zhang, sp. nov.; 288, 293. O. meinei Yu, Maddison & Zhang, sp. nov.; 289. O. timburtoni Yu, Maddison & Zhang, sp. nov.; 290. O. deelemanae Yu, Maddison & Zhang, sp. nov.; 291. O. pakse Yu & Zhang, sp. nov.; 292. O. eucola Thorell, 1890, holotype.