Euochin yeyu sp. nov. (叶ª尧奇e)

Figs 115–134

Type material. Holotype: ♂ (MHBU-ARA-00023389), CHINA: Yunnan Province, Dali City, Jisheqing Water Reserve (ḚZÎ保ḁ区), 25.7369°N, 100.1241°E, 2164 m elev., 13 July 2021, leg. J. Zhang.

Paratypes: 2♂ 2♀ (MHBU-ARA-00023423), same data as holotype .

Etymology. The specific epithet is derived from the ancient name of Dali City: Yeyu City (叶dzẅ). Noun in apposition.

Diagnosis. The new species closely resembles E. ailao sp. nov., E. yangmei and E. shenjun in the genital morphology, but can be distinguished by: (1) the embolus straighter in ventral view; (2) the thinner RTA in retrolateral view; (3) the white setae on the carapace concentrated in certain area, rather than scattered around; (4) the spermathecae almost equal in length and width, smaller than 1/2 of the epigynal window in ventral view.

Description.Male. Habitus shown in Figs 121,123.Carapace length2.087; abdomen length1.740.Measurements of eyes: AME 0.369, ALE 0.234, PME 0.064, PLE 0.227. Measurements of legs: I 3.784 (1.209, 0.599, 0.914, 0.600, 0.462), II 3.297 (1.075, 0.469, 0.782, 0.551, 0.420), III 3.545 (1.203, 0.479, 0.720, 0.735, 0.408), IV 3.990 (1.239, 0.500, 0.868, 0.931, 0.452); leg formula: 4132. Color in ethanol: carapace dark brown, covered with yellowish setae. Abdomen dark, with yellow and brown bands. Chelicera (Fig. 125) with two promarginal and one retromarginal teeth. Palp (Figs 126–127, 130–132): distal femur, patella and tibia with long white setae; embolic disc large, partly hidden by tegulum in ventral view, slightly tilted retrolaterally; embolus tapered, relatively straight in ventral view; CyF notably extended; RTA tapered.

Female. Habitus shown in Figs 122, 124. Carapace length 1.779; abdomen length 2.473. Measurements of eyes: AME 0.385, ALE 0.232, PME 0.076, PLE 0.219. Measurements of legs: I 2.798 (0.961, 0.339, 0.701, 0.462, 0.335), II 2.567 (0.900, 0.363, 0.585, 0.381, 0.338), III 2.943 (0.987, 0.348, 0.621, 0.611, 0.376), IV 3.589 (1.225, 0.402, 0.686, 0.810, 0.466); leg formula: 4312. Color in ethanol: like that of male. Chelicerae as in male. Epigyne (Figs 128–129, 133–134): epigynal window large; copulatory openings located at anterior margin of epigynal window; copulatory ducts running anteriorly to copulatory openings, with developed accessory glands; spermathecae circular.

Distribution. China (Yunnan).