Euochin dongpo, Wang & Zhang, 2023

Wang, Weihang & Zhang, Junxia, 2023, On fourteen species of Euochin Prószyński, 2018 from China (Araneae: Salticidae: Euophryini), Zootaxa 5297 (3), pp. 337-379 : 346-348

Euochin dongpo sp. nov. (ṪDZƙẅss)

Figs 35–50

Type material. Holotype: ♁ (MHBU-ARA-00023463), CHINA: Guangxi Zhuang Autonomous Region, Hezhou City, Babu District , Daguishan Natural Reserve , Qixingchong , Dadong Patrol Station (kffƜOiḞLJƖAEṗfi âkdzúḞ⁂), 24.072222°N, 111.598333°E, 722 m a.s.l., 9 May 2021, leg. Y. Mu & W. Wang. Paratypes: 2♀ (MHBU-ARA-00025230), same data as holotype .

Etymology. The new species is named after a well-known ancient Chinese litterateur, Dongpo Su, who was relegated to the Lingnan Region (including Guangxi and Guangdong) and left many anecdotes there; he profoundly influenced the folk culture of southern China. Noun (name) in apposition.

Diagnosis. Both sexes resemble Euochin bulbus and E. atrata (Song & Chai, 1992), but can be easily distinguished by the non-furcated retromarginal tooth of the chelicera ( Fig. 39 ; vs. furcated retromarginal tooth in E. bulbus and E. atrata , see Bao & Peng 2002: fig. 14; Zha et al. 2014), the narrower distal part of the embolus ( Figs 40–44 , vs. strikingly broadened in E. bulbus and E. atrata , see Zha et al. 2014: figs 6, 9, 16–17, 19), and the copulatory duct without obvious accessory gland ( Figs 46 , 50 ; vs. copulatory duct with highly developed accessory gland in E. bulbus and E. atrata , see Zha et al. 2014: figs 4, 11, 15, 22; Yu et al. 2021: fig. 1G).

Description. Male. Habitus see Figs 35, 37 . Carapace length 1.604; abdomen length 1.377. Eye measurements: AME 0.372, ALE 0.250, PME 0.070, PLE 0.218. Leg measurements: I 2.781 (0.909, 0.421, 0.675, 0.447, 0.329), II 2.382 (0.829, 0.347, 0.532, 0.339, 0.335), III 2.667 (1.003, 0.168, 0.636, 0.536, 0.324), IV 2.858 (0.938, 0.318, 0.563, 0.641, 0.398); leg formula: 4132. Color in ethanol: carapace dark, with white setae. Abdomen dark, with white bands and patches. Chelicera ( Fig. 39 ) with two promarginal and one retromarginal teeth. Palp ( Figs 40–44 , 47–48 ): tibia and dorsal cymbium with long white setae; embolus ribbon-like, tip with membrane surrounding opening of sperm duct; cymbial flange narrow; RTA straight, finger-like.

Female. Habitus see Figs 36, 38 . Carapace length 1.913; abdomen length 1.480. Eye measurements: AME 0.460, ALE 0.302, PME 0.085, PLE 0.232. Leg measurements: I 3.106 (1.009, 0.545, 0.714, 0.446, 0.392), II 2.691 (0.902, 0.382, 0.618, 0.394, 0.395), III 3.518 (1.238, 0.506, 0.660, 0.717, 0.397), IV 3.610 (1.132, 0.408, 0.762, 0.835, 0.473); leg formula: 4312. Color in ethanol: similar to that of male, but lighter in coloration. Chelicera as in male. Epigyne (45–46, 49–50): epigynal window obviously larger than spermatheca in ventral view; median septum hourglass-like; copulatory opening located on anterior margin of epigynal window.

Distribution. China (Guangxi).

Figures

FIGURES 35–39. Euochin dongpo sp. nov., holotype male (35, 37, 39) and paratype female (36, 38). 35–36. Habitus, in dorsal view; 37–38. Carapace, in frontal view; 39. Left male chelicera.

FIGURES 40–46. Genitalia of Euochin dongpo sp. nov.. 40–42. Left male palp of holotype, in prolateral (40), ventral (41) and retrolateral (42) view; 43. Inflated left male palp; 44. Detail of embolus; 45–46. Epigyne of paratype, in ventral (45) and dorsal (46) view.

FIGURES 47–50. Genitalia of Euochin dongpo sp. nov.. 47. Left male palp of holotype, in ventral view; 48. RTA, in retrolateral view; 49–50. Epigyne of paratype, in ventral (49) and dorsal (50) view.