Isophya modesta

Dragan P. Chobanov, Beata Grzywacz, Ionuţ Ş. Iorgu, Battal Cιplak, Maya B. Ilieva & Elżbieta Warchałowska-Śliwa, 2013, 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, Zootaxa 3658 (1), pp. 1-81 : 25

3.4. Complex Isophya modesta

Under this grouping we place most of the species of I. modesta group. Their distribution covers the Northern Balkan Peninsula (Northern Montenegro, Eastern Bosnia and Hercegovina, Northern Kosovo, Serbia, North Bulgaria, Romania, Hungary, Slovakia, Ukraine, reaching the region of Kursk in the southern European part of Russia.

The complex is characterised by a large to very large body for the genus, with a massive habit. CuP vein is wide, frequently very bulged and long, except in I. miksici and I. clara , where it may be similar to that in I. bureschi ; in the other taxa it is>3/4 to almost equal to the width of metazone. Following west-east direction the disc of tegmina in the different taxa undergoes modification from greenish and slightly bulged to yellowish-brown and distinctly bulged (especially in I. longicaudata ). The stridulatory file bears between 55 and 160 teeth. The cercal tooth is pointed but short and wide contrary to the above described taxa. The song in taxa occurring in the western part of the range consists of groups of short syllables (similar to that of I. andreevae ) getting to the east consisted of single, long, almost compact (in I. longicaudata ) or split into two parts (in I. modesta ) syllables. After the revision made the complex includes 7 taxa of 5 species: I. clara , I. miksici , I. plevnensis sensu novo, I. longicaudata adamovici , I. longicaudata longicaudata , I. modesta modesta and I. modesta rossica .