Gomphocerus (Bolivarianus) acutus Karabağ, 1957

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 (Bolivarianus) acutus Karabağ, 1957 stat.n.

Material: Male specimens collected from Turkey, Rize, İkizdere-İspir road, Ovit Mountain , N 40.600000, E 40.856111, 2323 m, 19.viii.2015, (leg. A. Mol , D. Sirin & M.S. Taylan) ; Erzurum, Palandöken Mountains , N 39.823889, E 41.291944, 2890 m, 22.viii.2015 (leg. A. Mol , D. Sirin & M.S. Taylan) and male calling song recorded from three males in the field and laboratory (or room) conditions by authors .

Description of male calling song: In totally, three records from three males were examined. The main component of a calling song consists of a phrase, lasting 13.92–17.18 s and composed of about 42–71 syllables ( Fig. 4A ). The phrase begins quietly and crescendo structure and is reached the maximum intensity at the 30–40 syllables (1/2 of the phrase) ( Fig. 4A ). Each syllable (RPU) lasts in 210–340 ms. Oscillographic analysis shows that a syllable consists of two different parts ( Figs. 4B and 4C ). The syllable begins with the low-amplitude part (with unified indistinct pulses without gap) which last 92–138 ms and the second part of the syllable (duration: 105–194 ms) includes higher amplitude distinguishable 8–10 pulses.

Figures

FIGURE 4. Male calling song of G. (Bolivarianus) acutus (a complete phrase (A), nine complete syllables (B) and two complete syllables (C)) and G. (Bolivarianus) hemipterus. (a complete phrase (D), nine complete syllables (E) and two complete syllables and pulses (F)).