Bioacoustics review of Anatolian species of the predatory bush-cricket genus Saga (Orthoptera: Tettigoniidae: Saginae) with the description of a new species
Author
Şirin, Deniz
Author
Taylan, Mehmet Sait
Author
Sevgili, Hasan
Author
Mol, Abbas
text
Zootaxa
2019
2019-09-02
4664
1
83
102
journal article
25820
10.11646/zootaxa.4664.1.3
41df8811-1d93-450e-91ad-3f312805e1d3
1175-5326
3383536
36982CFC-0AE5-486D-832E-09A25EC4688F
Saga beieri
Kaltenbach, 1967
Distribution:
This species was recorded from
Anatolia
and
Syria
(
Kaltenbach 1967
). The distribution of species in
Anatolia
has intensified mostly in Mediterranean and South-Eastern parts (
Figure 3A
) of it (
Kaltenbach 1967
;
Naskrecki & Ünal 1995
).
Song recording:
Male specimens are collected from
Turkey
,
Mersin
, Tarsus, road of Gülek pass,
N 37°15.00’
,
E 034°46.29’
,
1086 m
,
25.VII.2017
, leg.: H. Sevgili, D. Sirin, A. Mol & M.S. Taylan and the calling songs are re- corded from one male at 28 ˚C in the room conditions (by D. Şirin).
FIGURE 3.
Distribution map (A) and male calling song of
Saga beieri
(B—phrase series, C—one complete phrase and D—a group of syllables, black arrow is the hypothetic opening hemisyllable movement and grey arrow is the hypothetic closing hemisyllable movement).
Description of song:
Six records from one male were examined. The calling song consists of phrases (
Figure 3B
) with irregular intervals. Phrase durations vary between 1.69 and 2.31 s (1.94 ± 0.13), and each phrase contains 71–82 syllables (74.6 ± 2.9). The phrase starts with 7–10 lower amplitudes syllables (generally corresponds to 1/7–1/8 of phrase) and continues with a crescending sequence and reach as highest amplitude at the end of this part (
Figure 3C
). The remaining syllables have quite similar amplitude. The phrase begins with an isolated
first hemisyl- lable
and is followed by a gap which last 27–58 ms (41.15 ± 9.97) between the first hemisyllable and the ordinary syllables in phrase. Oscillographic analyses show that the syllable periods duration varies between 20.44 and 31.81 ms (24.67 ± 1.6), and each syllable shows a standard structure, which is formulated as
loud and long opening hemi- syllable + less loud and short closing hemisyllable
(
Figure 3D
). The opening hemisyllables duration varies between 7.82–17.78 ms (13.45 ± 1.28), whereas the closing hemisyllable lasts for 8.73–15.90 ms (11.22 ± 1.09).