Gomphocerus (Gomphocerus) transcaucasicus Mistshenko, 1951

Mol, Abbas, Şirin, Deniz, Taylan, Mehmet Sait & Sevgili, Hasan, 2023, A review of the Anatolian Gomphocerus Thunberg, 1815 (Orthoptera: Acrididae Gomphocerinae) via morphological and bioacoustics characters: data suggesting a new species, a new subgenus and three new statuses, Zootaxa 5353 (5), pp. 401-429 : 423

Gomphocerus (Gomphocerus) transcaucasicus Mistshenko, 1951

Material: Male specimens collected from Turkey, Erzurum, Oltu, Kırdağ , Picnic area N 40.510833, E 42.100556, 2485 m, 21.viii.2015, (leg. A. Mol , D. Sirin & M.S. Taylan); and male calling song recorded from two males in the field and laboratory (or room) conditions by authors .

Description of male calling song: Totally three records from two males were examined. Calling song consists of a phrase lasting 25.05–28.64 s and composed of about 48–80 syllables ( Fig. 5D ). The phrase has a typical crescendo structure and is reached the maximum intensity at the 40–50 syllables (2/3 of the phrase) ( Fig. 5D ). Each syllable (RPU) lasts in 295–360 ms. Bioacoustics analysis shows that a syllable consists of two different parts ( Figs. 5E and 5F ). The first part last 175–188 ms and in this part syllables relatively have low-amplitude 9–10 pulses (with gaps 17–21 ms) and the second part of syllable (last in 125–145 ms) includes higher amplitude distinguishable 10–11 pulses. The second part of the syllable is ending with relatively a long syllable (last in 28–35 ms).

Figures

FIGURE 5. Male calling song of G. (Gomphocerus) eyluldenizi sp. n. (a complete phrase (A), nine complete syllables (B) and two complete syllables (C)) and G. (Gomphocerus) transcaucasicus (a complete phrase (D), twelve complete syllables (E) and three complete syllables and pulses (F)).