Itara (Singitara) singularis Gorochov, 1997

(Figs 6–9)

Itara (Singitara) singularis Gorochov, 1997: 68 — Gorochov, 2007: 207 (record in Mount Trus Madi)

Material examined. EAST MALAYSIA: Sabah State: Mount Trus Madi • 1♂; Trusmadi Entomology Camp; N5.44292, E116.45129, 1189.0± 5.6 m.a.s.l.; 1 November 2023, 19h03; attracted to light trap at the camp; coll. M.K. Tan, J.L. Yukang & A.Y.C. Chung; SBH.23.80 (FRC) • 1♂; Trusmadi Entomology Camp; N5.44292, E116.45129, 1189.0± 5.6 m.a.s.l.; 2 November 2023, 18h40; calling among shrub; coll. M.K. Tan, J.L. Yukang & A.Y.C. Chung; SBH.23.113 (ZRC) (Fig. 6) • 1♂; Trusmadi Entomology Camp; N5.44174, E116.45074, 1189.0± 5.2 m.a.s.l.; 2 November 2023, 20h30; attracted to light trap at the ridge; coll. M.K. Tan, J.L. Yukang & A.Y.C. Chung; SBH.23.127 (MNHN)

Remarks. The genitalia of our male specimens (Fig. 7) resemble the ones described by Gorochov (1997, 2007).

Ecology. The species was found to be attracted to light towards the forest edge (Fig. 8) and call among shrubs (Fig. 6).

Type locality. SINGAPORE

Distribution. Malay Peninsula (Singapore); Borneo (Sabah: Mount Trus Madi)

Calling song (1♂, 25.0°C) (Fig. 9). The calling song consists of a series of echemes. Each echeme typically consists of 18±2 (15–21) discrete syllables and has an average duration of 0.55±0.05 s (0.45–0.64 s). The average interval between consecutive echemes is 0.46±0.08 s (0.25–0.69 s). Within each echeme, each syllable has an average duration of 23.6±0.5 ms (22.9–24.7 ms). The average interval between consecutive syllables is 7.2±0.4 ms (6.1–7.9 ms). The frequency spectrum is pure-tonal and forms a harmonic, with the energy peaking at the fundamental frequency of 4.59±0.00 kHz.