Abstract
Isophya stysi (Čejchan, 1957), a flightless bush-cricket is one of only two Orthoptera species under strict legal protection in Poland. It reaches its northernmost range limit in northern Slovakia and south-eastern Poland. So far, it has been recorded from Poland only once, 50 years ago. We found numerous individuals of Isophya sp. in the Źródliska Jasiołki Nature Reserve (49°22'N, 21°54'E) already on 13 July 2011. However, only in 2019, we recognized that species as Isophya stysi. Later, we found it also at six other sites in SE Poland, five of which were located in the Beskid Niski Mountains and one near the town of Krosno.
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