Euochin yangmei, 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 : 367-369

Euochin yangmei sp. nov. (Kdzƙẅss)

Figs 2 , 189–207

Type material. Holotype: ♁ (MHBU-ARA-00025225), CHINA: Yunnan Province, Chuxiong Yi Autonomous Prefecture, Mt. Zixi (ḰĀƜ), 25.006344°N, 101.433264°E, 2172 m a.s.l., 25 June 2022, leg. L. Zhang, W. Wang & M. Xu. Paratypes: 3♁ 3♀ (MHBU-ARA-00025226), same data as holotype .

Etymology. The specific epithet is derived from the Chinese name of waxberry, one of the first author’s favorite fruits, as there were many waxberry trees at the type locality of the new species. Noun in apposition.

Diagnosis. Both sexes resemble Euochin shenjun sp. nov., but can be distinguished by the longer embolus, the longer and thinner RTA, as well as the broadened copulatory ducts (vs. embolus notably shorter, RTA shorter and wider, copulatory ducts thinner in E. shenjun sp. nov.; Figs 144–153 , 199–207 ). Females are also similar to E. atrata and E. bulbus , but can be distinguished by the tubular accessory gland on the strikingly robust copulatory duct ( Figs 203 , 207 ; vs. thinner copulatory duct and accessory gland with a sharp tip in E. atrata and E. bulbus , see Zha et al. 2014: figs 4, 11, 15, 22).

Description. Male. Habitus see Figs 189–191 , 194, 196 . Carapace length 1.428; abdomen length 1.156. Eye measurements: AME 0.254, ALE 0.177, PME 0.058, PLE 0.156. Leg measurements: I 1.837 (0.570, 0.288, 0.396, 0.297, 0.286), II 1.628 (0.512, 0.241, 0.358, 0.267, 0.250), III 1.961 (0.647, 0.232, 0.428, 0.368, 0.286), IV 2.326 (0.745, 0.238, 0.486, 0.504, 0.353); leg formula: 4312. Color in ethanol: carapace yellowish-brown, scattered with white setae. Abdomen yellowish-brown, with light bands and spots. Chelicera ( Fig. 198 ) with two promarginal and one retromarginal teeth. Palp (199–201, 204–205): dorsal femur and distal patella covered with white setae; embolic disc strikingly inclined ventro-retrolaterally; embolus relatively long, tip curved ventrally; cymbial flange marked; RTA relatively long, broadened subterminally.

Female. Habitus see Figs 192–193 , 195, 197 . Carapace length 1.761; abdomen length 1.988. Eye measurements: AME 0.341, ALE 0.212, PME 0.057, PLE 0.190. Leg measurements: I 2.443 (0.827, 0.364, 0.552, 0.364, 0.336), II 2.264 (0.762, 0.357, 0.494, 0.317, 0.334), III 2.749 (0.956, 0.330, 0.557, 0.505, 0.401), IV 3.213 (0.965, 0.304, 0.760, 0.742, 0.442); leg formula: 4312. Color in ethanol: like that of male, but lighter in coloration. Chelicera as in male. Epigyne ( Figs 202–203 , 206–207 ): epigynal window obviously larger than spermatheca in ventral view; median septum hourglass-like, anterior part notably broadened; copulatory opening located antero-laterally on rim of median septum; anterior part of copulatory duct strikingly expanded, with developed accessory gland; spermatheca wider than long.

Distribution. China (Yunnan).

Figures

FIGURES 1–3. Habitats of Euochin spp., arrows pointing to leaf litter areas where the spiders were found wandering around. 1. E. buziji sp. nov. in Mengmeng Town, Yunnan, China; 2. E. yangmei sp. nov. in Mt. Zixishan, Yunnan, China; 3. E. lingyi sp. nov. in Mt. Xishan, Yunnan, China.

FIGURES 189–193. Living spiders of Euochin yangmei sp. nov.. 189–191. Holotype male; 192–193. Paratype female.

FIGURES 194–198. Euochin yangmei sp. nov., holotype male (194, 196, 198) and paratype female (195, 197). 194–195. Habitus, in dorsal view; 196–197. Carapace, in frontal view; 198. Left male chelicera.

FIGURES 199–203. Genitalia of Euochin yangmei sp. nov.. 199–201. Left male palp of holotype, in prolateral (199), ventral (200) and retrolateral (201) view; 202–203. Epigyne of paratype, in ventral (202) and dorsal (203) view.

FIGURES 204–207. Genitalia of Euochin yangmei sp. nov.. 204. Left male palp of holotype, in ventral view; 205. RTA, in retrolateral view; 206–207. Epigyne of paratype, in ventral (206) and dorsal (207) view.

FIGURES 144–149. Genitalia of Euochin shenjun sp. nov.. 144–146. Left male palp of holotype, in prolateral (144), ventral (145) and retrolateral (146) view; 147. Detail of inflated bulb; 148–149. Epigyne of paratype, in ventral (148) and dorsal (149) view.

FIGURES 150–153. Genitalia of Euochin shenjun sp. nov.. 150. Left male palp of holotype, in ventral view; 151. RTA, in retrolateral view; 152–153. Epigyne of paratype, in ventral (152) and dorsal (153) view.