Description: Medium-sized grasshopper (♂ 17-23 mm, ♀ 23-30 mm). Ground colour is green, with a black stripe behind the eyes. Legs are brownish red, the hind knee is black. The tip of the abdomen is green or yellow in both sexes, and not red.
Similar species: none
Adults: from July to October
Song: Males have no calling song.
Habitat:  Humid grasslands and forest edges. It lives in the lower vegetation.
Distribution: Local in Budai-hg. More widespread in the North Hungarian Mts. (e.g. Mátra, Bükk, Aggtelek, Zempléni-hg.).
Note: The species was first described in 1996. Before that it belonged to P. fieberi (Scudder, 1898). The species is named in honour of B. Nagy, the famous Hungarian orthopterist.