Orcevia wuliang 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 : 17

Orcevia wuliang Yu & Zhang , sp. nov. (ĿDzĸ尔¤)

Figs 8 , 13 , 294–314

Type material. Holotype: ♂ (MHBU-ARA-00023550), CHINA: Yunnan Province, Dali City, Nanjian County, Mt. Wuliang , Cherry Blossom Valley , 24.7599°N, 100.5182°E, 1898 m elev., 27 July 2021, leg. K. Yu & W. Wang, HBUARA#2021-314 . Paratype: 1♀ (MHBU-ARA-00023551), same data as holotype (All type materials were raised and matured in October~ November 2021) .

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

Diagnosis. Males can be distinguished from O. sica ( Wu & Yang, 2008) comb. nov. by the relatively curved and wide RTA ( Fig. 304 ); females can be distinguished from O. sica by the copulatory openings that are far away from each other ( Fig. 305 ), and the accessory glands that are visible in dorsal view of vulva ( Fig. 306 ).

Description. Male (holotype). Habitus as shown in Fig. 300 . Carapace length 2.45; abdomen length 2.23; measurements of eyes: AME 0.40, ALE 0.25, PME 0.06, PLE 0.21; measurements of legs: I 4.34 (1.30, 0.99, 0.95, 0.81, 0.50), II 3.78 (1.16, 0.78, 0.70, 0.67, 0.47), III 3.89 (1.20, 0.63, 0.73, 0.82, 0.51), IV 4.38 (1.33, 0.70, 0.93, 0.89, 0.53); leg formula 4132. Body dark, dorsally covered by irregular karki setae; femora I–III almost all dark, femora IV with melanic area on distal half, other segments dark distally.

Palp ( Figs 302–304 ): bulb swollen; embolus rather slender, protruding edge of embolic disc divided into two parts ( Figs 307, 310 ); RTA wide basally, gradually narrowed to tip, tip of RTA blunt, slightly curved forwards.

Female. Habitus of paratype as shown in Fig. 301 . Carapace length 2.66; abdomen length 2.99; measurements of eyes: AME 0.46, ALE 0.29, PME 0.06, PLE 0.22; measurements of legs: I 4.15 (1.28, 0.95, 0.85, 0.61, 0.46), II 3.86 (1.26, 0.82, 0.74, 0.60, 0.44), III 4.30 (1.39, 0.71, 0.83, 0.84, 0.53), IV 4.87 (1.49, 0.79, 1.09, 0.96, 0.54); leg formula 4132. Body dark, carapace with sparse yellow setal band on posterior half of axis; boundary of melanic areas on legs indistinct .

Epigynum and vulva ( Figs 305–306 ): copulatory openings small, far from each other, outer edge extending downwards, forming wide U-shaped groove above genital furrow; copulatory ducts thick, wider than 2/3 of diameter of spermathecae; accessory glands visible in ventral view, slightly curved basally.

Natural history. Specimens were collected from cracks on large rock.

Distribution. China (Yunnan).

Figures

FIGURES 1–12. Comparison of male palpal bulbs of some euophryines, in ventral view. 1–8. Orcevia spp. [O. bokoblin Yu, Maddison & Zhang sp. nov. (1), O. nietzschei Yu, Maddison & Zhang sp. nov. (2), O. jinping Yu & Zhang, sp. nov. (3), O. mercuryi Yu, Maddison & Zhang, sp. nov. (4), O. shuyuani Yu & Zhang, sp. nov. (5), O. zabkai Yu, Maddison & Zhang, sp. nov. (6), O. yahaha Yu, Maddison & Zhang, sp. nov. (7) and O. wuliang Yu & Zhang, sp. nov. (8)]; 9. Laufeia concava Zhang & Maddison, 2012; 10. Amoenema erhai Yu & Zhang, 2023; 11. Lokina nyuewa Yu & Zhang, 2023; 12. Chalcovietnamicus vietnamensis (Żabka, 1985). Black dotted lines indicate retrolateral edge of membrane between salticid radix and tegulum, white arrows point to the retrolateral extension, and yellow lines indicate the proximal margin of tegulum.

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 294–299. Living spiders of Orcevia wuliang Yu & Zhang, sp. nov., holotype male (294–297) and paratype female (298–299), © Weihang Wang.

FIGURES 300–306. Orcevia wuliang Yu & Zhang, sp. nov., holotype male (300, 302–304) and paratype female (301, 305– 306). 300–301. Habitus; 302–304. Palp; 305. Epigynum; 306. Vulva; in dorsal (300–301, 306), prolateral (303), retrolateral (304) and ventral (302, 305) view. Abbreviations: AE, apophysis of embolic disc; pH, pro-ventral hump of male palpal tibia; RTA, retrolateral tibial apophysis.

FIGURES 307–310. Orcevia wuliang Yu & Zhang, sp. nov., palpal bulb, unexpanded (307) and expanded (308–310), in ventral (307), pro-dorsal (308), top (309) and dorsal (310) view. Abbreviations: AE, apophysis on embolic disc; AG, accessory gland; BH, basal haematodocha; DH, distal haematodocha; E, embolus; ED, embolic disc; FD, fertilization duct; LPT, lobe-like protrusion of tegulum; PE, protrude edge on embolic disc; SR, salticid radix; T, tegulum; ST, subtegulum.

FIGURES 311–314. Orcevia wuliang Yu & Zhang, sp. nov., unexpanded (311) and expanded (312) male palpal bulb, RTA (313; with arrows indicate small denticles) and female vulva (314), in ventral (311), dorsal (312, 314) and retrolateral (313) view. Abbreviations: AE, apophysis on embolic base; BH, basal haematodocha; DH, distal haematodocha; E, embolus; LPT, lobe-like protrusion of tegulum.