Poecilimon davisi Karabag, 1953

Chobanov, Dragan P., Sevgili, Hasan & Heller, Klaus-Gerhard, 2020, Bioacoustics of poorly known Poecilimon taxa (Insecta: Orthoptera: Tettigoniidae with redescriptions of P. pechevi and P. stschelkanovzevi, Zootaxa 4890 (4), pp. 535-553 : 547-548

Poecilimon davisi Karabag, 1953 (davisi -group)

TURKEY: Isparta, Dedegöl Mt. , 1700–1800 m (37.69437ºN, 31.29401ºE), 14.06.2014, nymphs last instar and imago, leg. D. Chobanov & S. Kaya , several males recorded ( Fig. 7 , 8 ), stridulatory file studied; Adana, Madenli vill., 1700 m (37. 32325ºN, 31. 83269ºE), 15.06.214, nymphs, leg. D. Chobanov & S. Kaya; Isparta, Sultan Dagh near Aksehir , 1900 m (38.2833°’N, 31.3167°E), 28.06.2002, leg. K.-G. Heller, 2 males recorded; Isparta, Yalvaç (38.2667°N, 31.1667°E), 28.06.2002, leg. K.-G. Heller, 2 males recorded.

The males were active at night and produced short echemes with a duration of 0.4± 0.1 s (n=54; range 0.25– 0.63 s; Fig. 8 ). During the recording sessions always at least two males were in acoustical contact. In this situation the echemes were often arranged in groups with two or more males alternating. However, occasionally also isolated echemes were heard (duration of intervals 3.9± 8.1s, range 0.2–47s, n=45). An echeme contained on average 9 syllables (SRR 20.2 Hz; T =25–26ºC). The syllables had a duration of 30.6±3.8 ms (n=13) and contained 5.1±1.1 (n=13) impulses ( Fig. 7 ) resulting in a mean interval of 7.8 ms between the impulses. Sometimes intrasyllable gaps were as large as the gaps between the syllables. At 20ºC the SRR was only 15.3 Hz and the syllables had a duration of about 40.6±3.9 ms (n=9).

The spectrum of the song had its peak near 30 kHz ( Fig. 9 ).

For details of the stridulatory file see Table 2 , Fig. 5 .

Figures

FIGURE 5. Stridulatory files of Poecilimon species; a—P. ataturki, b—P. armeniacus, c—P. harveyi, d—P. haydari, e—P. doga, f—P. excisus, g—P. davisi, h—P. guichardi.

FIGURE 7. Oscillograms of male calling songs of Poecilimon species, details. Name of taxa and air temperature during recording provided below each oscillogram. Time scale in the lower right corner.

FIGURE 8. Oscillograms of male calling songs of Poecilimon species, an overview. Name of taxa and air temperature during recording provided below each oscillogram. Time scale in the lower right corner.

FIGURE 9. Spectral composition of male calling songs.