Euochin bethunei, 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 : 342-343

Euochin bethunei sp. nov. (ƦĖḋƙẅss)

Figs 4–18

Type material. Holotype: ♁ (MHBU-ARA-00022291), CHINA: Hunan Province, Yongzhou City, Dongan County, Damiaokou Town , Shunshan Park , Ehuangxi (kěUDZHƜȑȁđṖĀ), 26.416301°N, 111.0356687°E, 694 m a.s.l., 8 October 2015, leg. C. Jin, X. Guo & J. He. Paratype: 1♀ (MHBU-ARA-00025229), same data as holotype .

Etymology. The specific epithet is in honor of a prominent internationalist from Canada, Dr. Henry Norman Bethune, who saved numerous Chinese soldiers during World War II and is widely commemorated by the people of China.

Diagnosis. The males resemble Euochin bulbus ( Bao & Peng, 2002) in genitalic features, but can easily be distinguished by the non-furcated retromarginal tooth of the chelicera and the tubular form of the embolus ( Figs 8 , 9–12 , 15 ; vs. the compound retromarginal tooth of four cusps and the ribbon-like embolus in E. bulbus , see Bao & Peng 2002: fig. 14; Zha et al. 2014: figs 16–17, 19–20). The male palp is also like that of Euochin yaoi Wang & Li, 2021 , but differs by the robust embolus and thin RTA (vs. thin embolus and strong RTA in E. yaoi , see Wang & Li 2021: figs 2B–D). The female epigyne is similar to that of E. bulbus , but can be recognized by the obviously smaller epigynal window and accessory gland ( Figs 13 , 17 ; see Zha et al. 2014: figs 14, 21).

Description. Male. Habitus see Figs 4, 6 . Carapace length 1.518; abdomen length 1.390. Eye measurements: AME 0.289, ALE 0.229, PME 0.067, PLE 0.190. Leg measurements: I 2.413 (0.813, 0.381, 0.559, 0.326, 0.334), II 2.276 (0.756, 0.354, 0.483, 0.364, 0.319), III 2.425 (0.807, 0.311, 0.483, 0.481, 0.343), IV 2.847 (0.853, 0.361, 0.614, 0.640, 0.379); leg formula: 4312. Color in ethanol: carapace dark. Abdomen dark, with light bands and patches. Chelicera ( Fig. 8 ) with two promarginal and one retromarginal teeth. Palp ( Figs 9–12 , 15–16 ): tibia and cymbium with long white setal tuft dorsally; embolic disc circular, embolus relatively short and thick, tube-like, with notably large opening of sperm duct at tip; cymbial flange narrow but obvious; RTA short, dorsally margined with laminate process.

Female. Habitus see Figs 5, 7 . Carapace length 1.486; abdomen length 1.452. Eye measurements: AME 0.283, ALE 0.214, PME 0.062, PLE 0.194. Leg measurements: I 2.177 (0.747, 0.345, 0.490, 0.292, 0.303), II 2.004 (0.694, 0.346, 0.407, 0.295, 0.262), III 2.350 (0.831, 0.342, 0.443, 0.442, 0.292), IV 2.869 (0.871, 0.336, 0.637, 0.628, 0.397); leg formula: 4312. Color in ethanol: similar to that of male, but lighter in coloration. Chelicera as in male. Epigyne ( Figs 13–14 , 17–18 ): diameter of epigynal window less than that of spermatheca; median septum hourglass-like; copulatory opening located antero-centrally on margin of epigynal window; copulatory duct with obvious accessory gland; spermatheca ovoid, bottom close to genital furrow.

Distribution. China (Hunan).

Figures

FIGURES 4–8. Euochin bethunei sp. nov., holotype male (4, 6, 8) and paratype female (5, 7). 4–5. Habitus, in dorsal view; 6–7. Carapace, in frontal view; 8. Left male chelicera.

FIGURES 9–14. Genitalia of Euochin bethunei sp. nov.. 9–11. Left male palp of holotype, in prolateral (9), ventral (10) and retrolateral (11) view; 12. Detail of embolus; 13–14. Epigyne of paratype, in ventral (13) and dorsal (14) view.

FIGURES 15–18. Genitalia of Euochin bethunei sp. nov.. 15. Left male palp of holotype, in ventral view; 16. RTA, in retrolateral view; 17–18. Epigyne of paratype, in ventral (17) and dorsal (18) view.