Isophya clara Ingrisch & Pavićević, 2010

Ivković, Slobodan, Online, Published & Version, Final, 2017, First results of a faunistic survey on the Orthoptera of Jadovnik Mountain, southwestern Serbia, with data on the calling songs of some bush cricket species, Turkish Journal of Zoology 41 (6), pp. 1083-1095 : 1085

5. Isophya clara Ingrisch & Pavićević, 2010 ( Figure 1 ): 2♂♂, 1♀, Gvozd (20), 12.07.2015; 2♂♂, 3♀♀, same locality 20.07.2016 ; 2♂♂, Kobilja Glava (21), 20.07.2016; 2♂♂, Divljaci (22), 20.07.2016.

ECOLOGY: Pratinicole; herbicole.

Remarks: I. clara was found in large numbers, mostly in mesophilous meadows. In the locality Gvozd (20) in 2015, this species was detected in mesophilous meadow, but in 2016 the same locality had been mowed and so most animals were found in higher and drier meadows. Males began to sing in the afternoon and they sang until dark. Ingrisch and Pavićević (2010) wrote that the song of I. clara consists of single, decrescending syllables with 20–31 impulses each without after-clicks. In song recordings of 2 males from Jadovnik Mountain (Gvozd), syllables with after-clicks (n 6) were detected (impulse number of main group 24–29: n = 26; 29 °C; Figure 2 ). A similar syllable structure ( Figure 3 ) was recorded in a population from Ovčar-Kablar Gorge (western Serbia). In both populations, the songs were formed of series of syllables (3–9). Syllables in specimens from Gvozd consisted of a main part of 200– 306 ms and after-clicks with a total duration of 570–585 ms, with intervals between them of 1– 1.5 s. In a specimen from Ovčar-Kablar Gorge, the song consisted of main part of 212–286 ms and after-clicks with a total duration of 467– 539 ms, with intervals between syllables of 0.877 – 1.886 s.

Stridulatory files of specimens from both populations show a different number of teeth than those published by Ingrisch and Pavićević (2010) (58–72). Specimens from Gvozd have 74 teeth ( Figure 4A ), while a specimen from Ovčar-Kablar Gorge has 49 teeth ( Figure 4B ).

Figures

Figure 1. Isophya clara (male).

Figure 2. Isophya clara, oscillograms of male calling song from Gvozd. A) 6 syllables; B) syllable with after-click.

Figure 3. Isophya clara, oscillograms of male calling song from Ovčar-Kablar Gorge. A) 6 syllables; B) syllable with after-click.

Figure 4. SEM photographs of the stridulatory files: (A) Isophya clara, Gvozd; (B) Isophya clara, Ovčar-Kablar Gorge.