Review of the Balkan Isophya (Orthoptera: Phaneropteridae) with particular emphasis on the Isophya modesta group and remarks on the systematics of the genus based on morphological and acoustic data Author Dragan P. Chobanov Author Beata Grzywacz Author Ionuţ Ş. Iorgu Author Battal Cιplak Author Maya B. Ilieva Author Elżbieta Warchałowska-Śliwa text Zootaxa 2013 3658 1 1 81 journal article 39033 10.11646/zootaxa.3658.1.1 0adf09ba-5301-4828-abf6-8dbe89f041ca 1175-5326 246551 C02D1C74-25C0-41DD-B098-62098EB7B62A Isophya longicaudata adamovici Peshev, 1985 ( Figs 42 , 67 , 91 , 116 , 153 , 158, 159 , 192 ) Isophya pravdini adamovici Peshev : Peshev 1985 (ssp.n.). Isophya longicaudata adamovici Peshev : Chobanov 2009a (comb.n.). Morphological description : see the references above. Bioacoustics : Chobanov 2009a. Karyotype : Warchałowska- Śliwa et al. 2008 (as I. modesta longicaudata ). Diagnosis : see Chobanov 2009a. This subspecies shows more primitive features than the nominate one that are transitional to those of I. plevnensis . The differences from I. l. longicaudata are as follows: CuP is shorter and less thick; lateral margins of metazone stronger S-shaped, ovipositor shorter (about 18 mm after Peshev 1985; in I. longicaudata usually> 20 mm ); male song consists of shorter syllables (400–850 ms at 27–28°C) with 58–75 impulses and less clearly differentiated parts. The first syllable part (when distinct) was 285–326 ms long with 43– 64 impulses and impulse period of 5–20 ms, the second part—250–494 ms with 9–19 impulses and impulse period of 11–108 ms (Chobanov 2009a). Distribution ( Fig. 192 ) and phenology : Until now the subspecies is known only from the high parts of Eastern Stara Planina Mountains in Bulgaria between 800 and 1200 m altitude where it was found in lush mesophyte grass habitats. Nymphs—IV–VI, imago—VI–VIII.