Asiophlugis temasek temasek Gorochov & Tan, 2011

Tan, Ming Kai, Muhammad, Amira Aqilah, Gorochov, Andrei V. & Abdullah, Nurul Ashikin, 2024, An account on some katydids (Orthoptera: Tettigonioidea) from Panti Forest Reserve in Johor, Peninsular Malaysia, Zootaxa 5415 (1), pp. 117-143 : 130-133

Asiophlugis temasek temasek Gorochov & Tan, 2011

( Figs 15C, 15D , 16 , 17 )

Asiophlugis temasek temasek Gorochov & Tan, 2011: 129 — Tan, 2011: 234; Tan et al., 2019: 623 (bioacoustics)

Specimens examined. PENINSULAR MALAYSIA: Johor State: PFR • 1♁; Bunker Trail; N1.86099, E103.88698, 29.0± 6.2 m.a.s.l.; 16 August 2023, 20h13; under the foliage of a small tree; coll. M. K. Tan, Amira A. Muhammad & N. Ashikin Abdullah; PANTI.23.1 ( ZRC) • 1♁ 1♀; Bunker Trail ; N1.86055, E103.88689, 48.7± 6.1 m.a.s.l.; 16 August 2023, 20h44; under the foliage of a small tree; coll. M. K. Tan, Amira A. Muhammad & N. Ashikin Abdullah; PANTI.23.5, 6 ( ZRC) • 1♁; Panti Barat ; N1.81019, E103.85226, 51.8± 6.7 m.a.s.l.; 17 August 2023, 20h35; under the foliage of a small tree; coll. M. K. Tan, Amira A. Muhammad & N. Ashikin Abdullah; PANTI.23.27 ( MZUM)

Remarks. This species is first described and known only from Singapore. The material collected from PFR represents the first record of this species outside its type locality and the first in Peninsular Malaysia. The material is also distinct from the subspecies Asiophlugis temasek tioman Gorochov, 2011 from Pulau Tioman in both the morphology and calling song.

Ecology. This species is fairly common as compared to A. rete .

Type locality. SINGAPORE

Distribution. PENINSULAR MALAYSIA (Johor State: PFR) [new]; SINGAPORE

Calling song (1♁, 26.2°C) ( Fig. 17 ). As described by Tan et al. (2019), the calling song is made up of a rapiddecay pulse and repeats in a series. However, the male from PFR produce pulse with much shorter duration than both subspecies of Asiophlugis temasek reported in Tan et al. (2019): 3.3±0.4 ms (2.5–4.0 ms). Consequently, the pulse repetition rate is also much higher at 187±15 pulses s−1 (160–215 pulses s−1). The average down-time between consecutive pulses is also lower at 2.1±0.4 ms (1.3–2.8 ms). The calling song has a completely inaudible (to humans) and broad-based spectrum with the average peak frequency of 57.4±1.1 kHz (55.3–58.8 kHz), very similar to the values reported in Tan et al. (2019). That the time domain of the calling song of A. temasek is highly variable and the frequency domain seemingly conserved suggests that perhaps the frequency domain is more important in conspecific recognition than the temporal domain. This postulation requires further testing.

Figures

FIGURE 15. Asiophlugis rete (A, B) and Asiophlugis temasek temasek (C, D) ♁ abdominal apex in dorsal (A, C) and lateral (B, D) views. Scale bars: 1 mm.

FIGURE 16. Asiophlugis temasek temasek ♁ adult in its natural environment.

FIGURE 17. Asiophlugis temasek temasek ♁ calling song recorded in the laboratory: oscillograms (A, C) and spectrograms (B, D) showing a continuous trill (A, B) and four rapid-decay pulses (C, D), oscillogram showing pulse structure (E).