Elbenia (Elbenia) paradigitata Gorochov 2023

Elbenia (Elbenia) paradigitata Gorochov, 2023 (Figs 2A, 3, 4) Elbenia (Elbenia) paradigitata Gorochov, 2023b: 20. New material examined. EAST MALAYSIA; Sabah State • 1♂; Sinipung Hill, near Long Pasia and Meligan; N4.43564 E115.72317, 1298.0± 9.2 m.a.s.l.; 20 November 2024, 16h30; near leaf litter; coll. M.K. Tan; SBH.24.165 (FRC) • 1♂; Sinipung Hill, near Long Pasia and Meligan; N4.44538 E115.71494, 1556.0± 10.1 m.a.s.l.; 21 November 2024, 23h50; attracted to light trap; coll. M.K. Tan; SBH.24.218 (ZRC). Remarks. Our specimens most resemble Elbenia (Elbenia) paradigitata Gorochov, 2023 from Mount Trus Madi (see Gorochov, 2023b). The black patch of the stridulatory area is very similar: its left tegmen having irregularly transverse black patch covering vein 1A but not reaching the mirror (Fig. 3A). The stridulatory file on the left tegmen also has a similar shape and similar number of teeth (circa 70) (Fig. 3C). The shape of the posterior lobe of the male tenth abdominal tergite is similarly slender and narrowly spaced apart; although these lobes can be flexible and appear wider than in its natural shape (Figs 3D–F). Their cerci are similar in their arcuate, long and slender shape, with its apical part directed medially and having an apex tooth-like (Figs 3E–H). The subgenital plate is stout, not necessarily surpassing the apices of the tenth abdominal tergite lobes; its apex with a groove at the base very narrow before widening at its apical end (Figs 3E, 3F, 3H). Type locality. EAST MALAYSIA: Sabah: Mount Trus Madi. Distribution. Borneo: Sabah State: Mount Trus Madi, Sinipung Hill [new locality record]. Natural history. Compared to the more commonly sighted species Elbenia (Elbenia) tenera Brunner von Wattenwyl, 1878, this species was found deep inside the forest, rather than along forest edge or roads. Calling song (Fig. 4). The calling song is an isolated echeme made up of two syllables. The average echeme duration is 25.0±1.1 ms (22.8–27.2 ms). The first syllable consists of two pulses and has an average duration of 4.6±1.0 ms (3.0–6.7 ms). The first pulse is of a higher energy than the second one and of a slightly longer duration (1.3±0.3 vs. 1.1±0.3 ms). The second syllable consists of three short pulses (duration = 0.3–1.0 ms) followed by a longer pulse (duration = 1.3–2.1 ms). The initial three pulses are of distinctly lower energy than the last pulse; consecutive pulses are of higher energy. The average duration of the second syllable is 6.4±1.0 ms (4.7–9.4 ms). The average down time (silent interval between the two syllables) is 14.0±1.4 ms (10.8–16.9 ms). The average period of syllable is 18.6±0.9 ms (15.7–20.4 ms). The first syllable is usually of a slightly lower amplitude than the last pulse of the second syllable. The frequency spectrum is broadband and is not symmetrical and has a peak frequency of 23.5±0.8 kHz (22.0–24.7 kHz). The spectrum also has a secondary peak at 10.8±0.5 kHz (10.2–11.3 kHz).