Decticus verrucivorus mithati Ramme, 1939

Taylan, Mehmet Sait, Mol, Abbas, Sevgili, Hasan & Şirin, Deniz, 2019, Bioacoustics characterization of some anatolian endemic and sub-endemic Katydids (Orthoptera; Tettigoniidae; Bradyporinae, Phaneropterinae and Tettigoniinae), Zootaxa 4603 (2), pp. 289-310 : 293

Decticus verrucivorus mithati Ramme, 1939

Distribution. This little known species is endemic to Anatolia. It was recorded only from İzmir province of Turkey ( Figure 4A ) ( Ramme 1939; Götz 1970).

Song recording. Male specimens collected from Turkey, Isparta, between Senirkent-Şuhut road, 3 km. road- side, 38°09.33’ N, 030°43.48’ E, 950 m, 02.VII.2015 (by D. Şirin, M.S. Taylan & A. Mol) and calling song recorded from one male at 31 °C in the field (by M.S. Taylan).

Description of song. Three records from one male were examined. The calling song consists of isolated uneven syllables couples (except the 3–4 single syllables at the beginning of the sequence) ( Figure 4B ) with an interval of 1.18– 1.81 s (1.42 ± 0.17). The duration of syllable couples varies between 62–78 ms (68.64 ± 4.06); the single duration of syllables varies between 37–44 ms (40.25 ± 3.30). Oscillographic analyses show that the first syllable in the couple lasts for 31–38 ms (33.71 ± 0.82) and includes three elements (pulse like quieter/quieter/louder) ( Figure 4C ). The first element has lowest amplitudes and consists of a pulse like quieter part and lasts for 6–10 ms (7.89 ± 1.05). The second element is a quieter part and follows the first element after an interval of 5–8 ms (6.14 ± 0.98) and lasts for 7–10 ms (7.88 ± 1.25); the third element is a louder element and its duration varies between 13–21 ms (18 ± 1.78 ms). Second syllables duration varies between 24–30 ms (36.72 ± 2.23) and includes two louder element (rarely start with a quieter part) without any interval ( Figure 4D ).

Figures

FIGURE 4. Distribution map (A) and male calling song of Decticus verrucivorus mithati (B a sequence of syllable couples C four complete syllable couples and D a complete syllable couple).