Icius faker sp. nov. (飞壳伊e)

Figs 10, 28–53

Type material. Holotype: ♂ (MHBU-ARA-00026728), CHINA: Xizang Autonomous Region, Xigaze City (Ƌẹ则Ṫ), Rinbung County (仁ħ县), Partang Town (ñŝ乡), Unity Park (团ȅȓ园), 29.3140°N, 90.2683°E, 3835 m a.s.l., 31 July 2023, leg. Y. Hou, Z. Yang, Y. Ni & Y. Badan. Paratypes: 2♂ 3♀ (MHBU-ARA-00026583), same data as the holotype .

Etymology. The specific epithet is a noun in apposition taken from "Faker", an alias used by Sang-hyeok Lee, who is a highly esteemed e-sports athlete in the game League of Legends. His striving spirit has inspired the first author during his study of jumping spiders.

Diagnosis. Icius faker sp. nov. closely resembles I. zang Wang, Mi & Li, 2024 and I. hamatus (C. L. Koch, 1846) in its genitalic structures (seeWang et al. 2024: 156, figs 9A–C, 10A–B; Andreeva et al. 1984: 353, figs 2–5). It can be distinguished from I. zang by the male palp with a wide and flat embolus (Figs 41–47, 50, 51; vs. embolus thin and tube-like in I. zang); the inconspicuous lamellar tegular process (LP) of the male palp (Figs 42, 43, 46, 50; vs. LP obvious in I. zang); the spermathecae are close to the genital groove (Figs 49, 53; vs. spermathecae far away from the genital groove in I. zang). It differs from I. hamatus in the male palp with a wide and flat embolus (Figs 41–47, 50, 51; vs. embolus thin in I. hamatus) and a single RTA (Figs 46, 47, 50, 51; vs. male palp with a dorsal tegular apophysis in addition to the RTA in I. hamatus); the epigynum with larger copulatory openings and two obvious pockets along the genitalic groove (Figs 48, 52; vs. copulatory openings small and pocket absent in I. hamatus).

Description. Male. Habitus as in Figs 29–31, 33. Measurements of holotype: carapace 1.94 long, 1.46 wide, abdomen 2.16 long, 1.56 wide; eye measurements: AME 0.38, ALE 0.22, PME 0.06, PLE 0.17; leg measurements: Ⅰ 3.62 (1.16, 0.54, 0.85, 0.51, 0.56), II 2.79 (0.90, 0.41, 0.61, 0.41, 0.46), III 3.11 (1.00, 0.48, 0.54, 0.60, 0.49), IV 3.26 (1.15, 0.48, 0.54, 0.60, 0.49); leg formula 1432. Carapace dark brown, with few scales (Fig. 33). Chelicerae black (Figs 36, 39), with two promarginal and one retromarginal teeth (Fig. 39). Leg I black, other legs lighter in color. Femur I with a row of stiff setae close to distal margin of prolateral surface, together with a line of long stiff seta, together with line of long stiff setae along lateral margin of eye area on carapace, probably functioning as stridulatory apparatus.

Palp (Figs 41–47, 50, 51): embolus flat and wide; tegulum rough; tegular bump medio-retrolaterally located; RTA dagger-like; dorsal side of palp with white scales (Figs 29, 30, 36).

Female. Habitus as in Figs 28, 32, 34. Measurements of paratype (one female in MHBU-ARA-00026583): carapace 2.04 long, 1.61 wide, abdomen 3.39 long, 2.38 wide; eye measurements:AME 0.35, ALE 0.23, PME 0.06, PLE 0.20; leg measurements: Ⅰ 3.50 (1.08, 0.57, 0.81, 0.54, 0.50), II 3.27 (1.03, 0.54, 0.70, 0.43, 0.57), III 3.49 (1.06, 0.51, 0.66, 0.62, 0.64), IV 4.30 (1.36, 0.53, 0.95, 0.89, 0.57); leg formula 4132. Carapace brown, with dense scales (Figs 28, 34). Stridulatory apparatus similar to males (Figs 37–38). Legs slightly yellow (Figs 28, 32, 37).

Epigynum (Figs 48, 49, 52, 53): copulatory openings obvious; two pockets present close to genitalic groove. Vulva (Figs 49, 53): copulatory ducts short with prominent accessory glands, spermathecae small, fertilization ducts at anterior region of spermathecae.

Natural history. Lives in the nest aggregations beneath rocks (Fig. 10).

Distribution. China (Xizang) (Fig. 1).