Euochin shenjun, 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 : 360-362

Euochin shenjun sp. nov. (Dzầƙẅss)

Figs 135–153

Type material. Holotype: ♁ (MHBU-ARA-00025223), CHINA: Yunnan Province, Kunming City, Panlong District, Huanglongqing (ØËñ), 25.087561°N, 102.806884°E, 2014 m a.s.l., 1 June 2022, leg. W. Wang. Paratypes: 2♁ 2♀ (MHBU-ARA-00025224), same data as holotype .

Etymology. The specific epithet is derived from the historical literary name of a hill close to the type locality of this species, which is located opposite to the Lingyi (Mt. Xishan). Noun in apposition.

Diagnosis. Closely related to Euochin yangmei sp. nov., but can be distinguished by the shorter embolus, the shorter and wider RTA, as well as the thinner copulatory duct (vs. embolus notably longer, RTA longer and thinner, copulatory duct highly broadened in E. yangmei , compare Figs 144–153 with 199–207). Male palp also resembles that of E. albopalpalis ( Bao & Peng, 2002) , but can be distinguished by the thinner embolus tip, and the plane of the embolic disc inclining ventro-retrolaterally ( Figs 144–145 , 150 ; vs. embolus tip highly broadened and the plane of the embolic disc inclined ventrally in E. albopalpalis , see Bao & Peng 2002: figs 7–8). The female epigyne is also similar to that of E. atrata (Song & Chai, 1992) and E. bulbus , but differs in the tubular accessory gland that has no tapered tip ( Figs 149 , 153 ; vs. accessory gland with pointed tip in E. atrata and E. bulbus , see Zha et al. 2014: figs 4, 11, 15, 22).

Description. Male. Habitus see Figs 135–136 , 139, 141 . Carapace length 1.862; abdomen length 1.550. Eye measurements: AME 0.346, ALE 0.228, PME 0.058, PLE 0.205. Leg measurements: I 2.572 (0.863, 0.433, 0.548, 0.398, 0.330), II 2.261 (0.780, 0.371, 0.468, 0.334, 0.308), III 2.722 (0.958, 0.363, 0.537, 0.519, 0.345), IV 3.199 (1.052, 0.418, 0.606, 0.657, 0.466); leg formula: 4312. Color in ethanol: carapace dark brown, scattered with white setae. Abdomen dark brown, with light yellowish-white bands and spots. Chelicera ( Fig. 143 ) with two promarginal and one retromarginal teeth. Palp ( Figs 144–147 , 150–151 ): distal femur and patella covered with long and white setae; embolic disc centrally concaved, inclining retrolateral-ventrally; embolus robust, tip curved ventrally; cymbial flange marked; RTA robust, relatively broad and short, tip extended into blunt process.

Female. Habitus see Figs 137–138 , 140, 142 . Carapace length 1.827; abdomen length 1.732. Eye measurements: AME 0.358, ALE 0.233, PME 0.060, PLE 0.193. Leg measurements: I 2.516 (0.840, 0.363, 0.595, 0.381, 0.337), II 2.391 (0.788, 0.361, 0.521, 0.386, 0.335), III 3.023 (1.048, 0.428, 0.591, 0.572, 0.384), IV 3.405 (1.059, 0.366, 0.748, 0.790, 0.442); leg formula: 4312. Color in ethanol: similar to that of male, but lighter in coloration. Chelicera as in male. Epigyne ( Figs 148–149 , 152–153 ): epigynal window large, separated by hourglass-like median septum; copulatory opening located anteriorly on rim of epigynal window; copulatory duct thick, with developed accessory gland; spermatheca elongated longitudinally.

Distribution. China (Yunnan).

Figures

FIGURES 135–138. Living spiders of Euochin shenjun sp. nov.. 135–136. Holotype male; 137–138. Paratype female.

FIGURES 139–143. Euochin shenjun sp. nov., holotype male (139, 141, 143) and paratype female (140, 142). 139–140. Habitus, in dorsal view; 141–142. Carapace, in frontal view; 143. Left male chelicera.

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.