Stethophyma grossum - Large Marsh Grasshopper
(L., 1758)

Description: Quite large, strikingly coloured species (♂ 16-25 mm, ♀ 26-35 mm). Ground colour is yellowish green to olive green. There is usually a black spot in the middle of the side flap of the pronotum. The brown fore wings extends beyond the hind knee. The underside of the hind femur is red, the hind tibia is yellow with black spines.
Similar species: Mecostethus parapleurus, A. fusca
Adults: from July to October
It sings only in sunny weather. The song consists of loud ticks with intervals of 1 sec. It sounds like a nail clipper.

Source: Orthoptera Species File (lab recording))
Habitat:  Wet grasslands and marshes.
Local and scarce. Known from different regions, e.g. Ócsa, Zala, Vas, Nógrád and along the river Tisza.

Stetophyma grossum, male
(Author: Dobos Zsolt)

Stethophyma grossum
(Author: Földesi Krisztina, source: ízeltlábú, CC BY 4.0)