Metrioptera brachyptera - Bog Meadow Bush-cricket
(L., 1761)

Description: Body dark brown (♂ 14-17 mm, ♀ 17-21 mm), head, thorax and fore wings upperside are greenish (although some animals are completely brown). The side flaps of the pronotum have narrow light border on the rear edge. On the hind femur there is a prominent, thick and dark stripe. The wings are slightly longer than the half of the abdomen. Ovipositor 9-12 mm, slightly curved.
Similar species: Platycleis and Roeseliana species.
Adults: from June to November
Song:
The song resembles of that of P. albopunctata . It repeats a very short scratchy sound for a long time (3-5 echemes/sec). Barely hearable, but easy to find with a bat detector (at 25-30 kHz).

source: Baudewijn Odé, xeno-canto

Habitat: 
In humid and semi-arid grasslands in hills and mountains. Mostly above 500 m. Active during the day, but hides in the vegetation.
Distribution:
Very rare and in decline in Hungary. Last population known from the Zemplén Mts.

Metrioptera brachyptera, male
(Author: Gilles San Martin, source: flickr.com, CC BY-SA 2.0)

Metrioptera brachyptera, female
(Author: Frank Vassen, source: flickr.com, CC BY 2.0)