Euochin yangtze, Wang & Yu & Zhang, 2024

Wang, Weihang, Yu, Ying & Zhang, Junxia, 2024, On a new genus and twelve new species of jumping spiders from southwestern China (Araneae, Salticidae, Salticinae, Euophryini), Zootaxa 5538 (3), pp. 201-232 : 215

Euochin yangtze sp. nov. (ẔƗ尧奇e)

Figs 94–114

Type material. Holotype: ♂ ( MHBU-ARA-00025242 ), CHINA: Hubei Province, Enshi Autonomous Region , Badong County, 31.1342°N, 110.4594°E, 847 m elev., 20 May 2023, leg. W. Wang.

Paratypes: 1♂ 1♀ ( MHBU-ARA-00025266 ), same data as holotype ; 1♂ 1♀ ( MHBU-ARA-00025283 ), same data as holotype .

Etymology. The specific epithet is derived from the Yangtze River, which is close to the type locality. Noun in apposition.

Diagnosis. Male palp closely resembles that of E. buziji Wang & Zhang, 2023 in the shape of embolus, but can be distinguished by the narrower embolic disc. Male palp is also similar to that of E. pingbian sp. nov., while differs in the more protruding embolic flange in ventral view. Female epigyne resembles those of E. nanjiabawa Wang & Zhang, 2023 , E. subwanyan (Wang & Li, 2020) and E. tianhe Wang & Zhang, 2023 , but can be distinguished by the much smaller epigynal window.

Description.Male. Habitus shown in Figs 100,102 .Carapace length1.402; abdomen length1.300.Measurements of eyes: AME 0.299, ALE 0.232, PME 0.064, PLE 0.188. Measurements of legs: I 2.244 (0.747, 0.298, 0.545, 0.357, 0.297), II 2.151 (0.781, 0.313, 0.467, 0.311, 0.279), III 2.473 (0.861, 0.298, 0.506, 0.500, 0.308), IV 2.572 (0.820, 0.306, 0.522, 0.570, 0.354); leg formula: 4312. Color in ethanol: carapace dark, with sparse white setae. Dorsal abdomen dark brown, with yellowish-white bands and spots. Chelicera ( Fig. 104 ) with two promarginal and one retromarginal teeth. Palp ( Figs 105–106 , 109–112 ): distal femur, patella and tibia covered with dense long white setae; embolic disc small, centrally concaved, plane of embolic disc nearly horizontal in ventral view; embolus straight, with a protruding embolic flange; CyF notably extended; RTA straight.

Female. Habitus shown in Figs 101, 103 . Carapace length 1.511; abdomen length 1.853. Measurements of eyes: AME 0.315, ALE 0.262, PME 0.066, PLE 0.220. Measurements of legs: I 2.310 (0.769, 0.307, 0.561, 0.368, 0.305), II 2.216 (0.803, 0.322, 0.483, 0.321, 0.287), III 2.549 (0.887, 0.308, 0.521, 0.515, 0.318), IV 2.653 (0.845, 0.314, 0.538, 0.589, 0.366); leg formula: 4312. Color in ethanol: body resembles that of male, but in lighter coloration. Chelicerae as in male. Epigyne ( Figs 107–108 , 113–114 ): epigynal window small, wider than long, margin weakly sclerotized, not overlapped with spermatheca in ventral view; copulatory openings at the anterior lateral margins of epigynal window; copulatory ducts relatively long and straight; spermathecae circular.

Distribution. China (Hubei).

Figures

FIGURES 94–99. Euochin yangtze sp. nov., male (94–96) and female (97–99).

FIGURES 100–108. Euochin yangtze sp. nov., holotype male (100, 102, 104–106) and paratype female (101, 103, 107–108). 100–101. Habitus, in dorsal view; 102–103. Carapace, in frontal view; 104. Left male chelicera; 105. Left male palp of holotype, in ventral view; 106. Detail of RTA in retrolateral view; 107–108 Epigyne of paratype, in ventral (107) and dorsal (108) views.

FIGURES 109–114. Genitalia of Euochin yangtze sp. nov.. 109–111. Left male palp of holotype, in prolateral (109), ventral (110) and retrolateral (111) views; 112. Detail of embolus; 113–114. Epigyne of paratype, in ventral (113) and dorsal (114) views.