Orcevia, Thorell, 1890

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 : 19

Orcevia zu Yu & Zhang, sp. nov. (aeĸ尔¤)

Figs 14 , 20, 22 , 353–379

Type material. Holotype: ♂ (MHBU-ARA-00023643), CHINA: Yunnan Province, Fugong County, Gumujia Village, Lajiamu , 26.8757°N, 98.8723°E, 1187 m elev., 18 July 2021, leg. K. Yu, W. Wang, Y. Mu & L. Zhang, HBUARA#2021-301 . Paratypes: 1♀ (MHBU-ARA-00023635), same data as holotype ; 1♂ (MHBU-ARA-00023636), CHINA: Yunnan Province, Gongshan County, 4 May 2004, leg. Z. Yang ; 1♂ (MHBU-ARA-00023637), CHINA: Yunnan Province, Fugong County, Lumadeng Village , 27.097°N, 98.8769°E, 1449 m elev., 19 July 2021, leg. K. Yu, W. Wang, Y. Mu & L. Zhang, HBUARA#2021-302 ; 2♂ 3♀ (MHBU-ARA-00023638~MHBU-ARA-00023640), CHINA: Yunnan Province, Baoshan City, Longyang District, Hanlongzhai , 25.3063°N, 98. 7983°E, 1772 m elev., 19 July 2021, leg. K. Yu, W. Wang, Y. Mu & L. Zhang, HBUARA#2021-307 ; 9♂ 6♀ (MHBU-ARA-00023599~MHBU-ARA-00023613), CHINA: Yunnan Province, Kunming City, Xishan Forest Park, 24.961560°– 24.956137°N, 102.657679°– 102.638294°E, 1900–2100 m elev., 30 May 2022, leg. W. Wang, HBUARA#2022-77 .

Etymology. The specific epithet is from the Chinese “ ae (zǔ)”, meaning “elders above paternal generation”; it is in honor of the grandparents of the first author who have given him tremendous love; noun in apposition.

Diagnosis. The new species resembles O. feitongae sp. nov. in the body form, the shape of male palp and the presence of a small nick on prolateral side of embolus ( Fig. 364 ), but the males can be distinguished by the absence of apophysis on embolic disc ( Fig. 376 ; vs. AE is present in O. feitongae sp. nov.) and the prolateral process on distal half of embolus that is not obviously triangular ( Fig. 361 ; vs. the process is obviously triangular in O. feitongae sp. nov.); females can be distinguished by the drop-like starting part of copulatory duct ( Figs 370–375 ), whereas the starting part of copulatory duct is inverted triangular in dorsal view of vulva in O. feitongae sp. nov..

Description. Male. Habitus as shown in Fig. 359 . Measurements of holotype: carapace length 2.57; abdomen length 2.51; measurements of eyes: AME 0.45, ALE 0.27, PME 0.07, PLE 0.21; measurements of legs: I 4.92 (1.35, 1.05, 1.16, 0.82, 0.54), II 4.04 (1.28, 0.82, 0.76, 0.71, 0.47), III 4.14 (1.31, 0.76, 0.73, 0.81, 0.53), IV 4.61 (1.38, 0.78, 0.99, 0.95, 0.51); leg formula 1432. Body dark, cephalon with yellow setal band on each lateral side and dorsal front area; front edge of clypeus with one row of sparse white setae; dorsal abdomen with dense yellow setae around and on posterior half of axis. Melanic area on legs I–II distinct than III–IV.

Palp ( Figs 361–363 ): palpal bulb rather swollen, lobe-like protrusion of tegulum short and stout; embolus straight, short sword-like in ventral view, surface of embolus rough; apophysis on embolic disc absent; basal and median part of RTA wide, distal portion gradually narrowed; pro-ventral hump of tibia pointing pro-ventrally, semicircular in prolateral view ( Fig. 362 ); ventral femoral bump shark fin-like in lateral view ( Figs 362–363 ).

Female. Habitus as shown in Fig. 360 . Measurements of paratype: carapace length 2.56; abdomen length 2.69; measurements of eyes: AME 0.48, ALE 0.29, PME 0.06, PLE 0.20; measurements of legs: I 3.46 (1.06, 0.81, 0.61, 0.56, 0.42), II 3.53 (1.12, 0.76, 0.67, 0.55, 0.43), III 3.82 (1.20, 0.69, 0.69, 0.77, 0.47), IV 4.51 (1.34, 0.78, 1.00, 0.88, 0.51); leg formula 4132. Coloration like male but setae on cephalon sparse.

Epigynum ( Fig. 365 ): area above atria forming triangular concave area; atria oval, close to each other and far away from genital furrow. Vulva ( Fig. 366 ): enlarged area of starting part of copulatory duct drop-shaped; accessory glands (AG) relatively long, distal part pointing upwards; spermathecae dark, one loop of duct formed at dorsal side of basal part of spermathecae.

Natural History. All specimens were collected in cracks of rocks, walls, or tree trunks.

Distribution. China (Yunnan).

Figures

FIGURES 13–17. Dorsal view of vulvae of some euophryines for comparison of accessory glands. 13. Orcevia wuliang Yu & Zhang, sp. nov.; 14. O. zu Yu & Zhang, sp. nov.; 15. Laufeia concava Zhang & Maddison, 2012; 16. Zabka xuyei (Lin & Li, 2020); 17. Spiralembolus yinggeling Wang & Li, 2023. 16–17. © Weihang Wang. Abbreviations: AG, accessory gland; S, spermatheca; SS, secondary spermatheca.

FIGURES 18–23. Habitats (18–19, 21, 23) and burrows (20, 22) of Orcevia species, with white arrows indicating where the specimens were collected (© 18. Weihang Wang; 19–23. Kun Yu). 18. O. deelemanae Yu & Zhang, sp. nov. in Xishuangbanna, Yunnan; 19, 23. O. proszynskii (Song, Gu & Chen, 1988) in Jianfengling, Hainan; 20, 22. O. zu Yu & Zhang, sp. nov. in Gongshan County, Yunnan; 21. O. sica (Wu & Yang, 2008) comb. nov. in Baoshan, Yunnan.

FIGURES 353–358. Living male (353–355) and female (356–358) of Orcevia zu Yu & Zhang, sp. nov., © Weihang Wang.

FIGURES 359–366. Orcevia zu Yu & Zhang, sp. nov., paratypes, male (359, 361–364) and female (360, 365–366). 359–360. Habitus; 361–363. Palp; 364. Embolus, with arrow indicating small notch on the prolateral side; 365. Epigynum; 366. Vulva; in dorsal (359–360, 366), prolateral (362), retrolateral (363), pro-ventral (364) and ventral (361) view. Abbreviations: pH, proventral bump of male palpal tibia; VFB, ventral femoral bump of male palp.

FIGURES 367–379. Orcevia zu Yu & Zhang, sp. nov., 367–375. variations of epigyna (367–369) and vulvae (370–375) among same locality (Mt. Xishan, Kunming); 376–377. Male palp; 378. Epigynum; 379. Vulva; in ventral (367–369, 376, 378), dorsal (370–375, 379) and retrolateral (377) view.Abbreviation: AG, accessory gland; CD, copulatory duct; E, embolus; ED, embolic disc; FD, fertilization duct; LPT, lobe-like protrusion of tegulum; S, spermatheca; VFB, ventral femoral bump of male palp.