Chorthippus (Chorthippus) dichrous (Eversmann, 1859)

Oedipoda dichroa Eversmann, 1859: 32,132.

Distribution in the Palaearctic region: Bulgaria, Italy, Crimea, Caucasia, Naxçıvan, Romania, Turkey and Greece (Bei-Bienko & Mistshenko 1951; Harz 1975; Mol & Zeybekoğlu 2013).

Distribution in the Turkish Thrace: TEKİRDAĞ: ÇANAKKALE: Gelibolu, Keşan-Çanakkale yolu, Evreşe yol ayrımı 2.km, 11m, N: 40°38’982’’ E: 26°52’058’’, 18.VI.2012, 3 ♂♂, leg.: D. Şirin, N. Ş. Odabaşı & L. Can; EDİRNE:Keşan-Çanakkale yolu Yerli Su mevkii, Koru Dağı, 260m., N: 40°42.857’ E: 26°45.186’, 2 ♂♂, 4 ♀♀, 18.VI.2012, leg.: D. Şirin, N. Ş. Odabaşı & L. Can; Enez, Enez-Keşan yolu arası 8. km, 32 m, 40°38’687” N, 26°16’244” E, 11.IX.2012, 4♀ (D. Şirin); KIRKLARELİ: Lüleburgaz, Hamidabat deresi Village, 15.VIII.1968, 6 ♂♂, 6 ♀♀; Lüleburgaz, Kumsaid deresi Village, 15.VIII.1968, 1 ♂, 2 ♀♀; TEKİRDAĞ: Çorlu, Önerler Village Karagöl location, 15.VIII.1968, 4 ♂♂, 1 ♀; Kumbağ Uçmak dere arası, Yeniköy civarı, 450m., 09. VI.2011, 3 ♂♂, 6 ♀♀, leg.: D. Şirin & L. Can; Değirmenaltı kampüsü, Fen Fakültesi civarı, 50m, 14. VI.2011, 6 ♂♂ leg.: D. Şirin ((Karabağ 1971; Mol et al. 2014).

Material examined: TEKİRDAĞ: Değirmenaltı Campus, around Science Faculty, 60m a.s.l., 19.VI.2012, 2 ♂♂, 2 ♀♀, leg.: D. Şirin; City Center, near the Toki konutları, 70m a.s.l., 10.VII.2011, 1 ♂, 3 ♀♀, leg.: D. Şirin; Malkara, Yaylaköy exit, 137m a.s.l., N: 40°54.714’ E: 26°48.757’, 25.VI. 2 012, 11 ♂♂, 3 ♀♀, leg.: D. Şirin (Calling song recorded from two males at 32 ˚C in the field by D. Şirin). ; EDİRNE: Keşan, Keşan-Malkara road, 273m a.s.l., N: 40°51.863’ E: 26°45.546, 25.VI.2012, 4 ♂♂, 3 ♀♀, leg.: D. Şirin ; KIRKLARELİ: between Dereköy-Pınarhisar, 314m a.s.l., N: 41°38.982’ E: 27° 36 253, 31.VII.2013, 3 ♂♂, leg.: D. Şirin & E. Bayram (Fig. 13 A).

Description of song: Chorthippus dichrous male calling song generally consists of a non-synchronized short phrase (Fig. 13 B). The calling song durations vary between 350 and 750 ms, depending on the number of syllables. The numbers and structures of pulses in the syllables cannot observe clearly because of the unsynchronized movement of the both legs (Stumpner & Helversen 1994; Fig. 13 C).

Published song data, used for comparison: Stumpner & Helversen 1994; Ragge & Reynolds 1998; Tishechkin & Bukhvalova 2009.