The Tymphrestos Mountain Grasshopper is endemic to Greece, and its distribution is restricted to three mountains in central Greece: Mt. Tymphrestos, Mt. Oiti and Mt. Vardhoussia. This species is assessed as Endangered. It has a restricted geographic range (the estimated extent of occurrence is ca 660 km² and the estimated area of occupancy is 30-40 km²) and occurs only at three locations. There is an inferred continuing decline in the extent and quality of its habitat due to livestock grazing (lately including cattle), skiing activities and forthcoming wind power station infrastructures. It is suspected that these activities are also causing a continuing decline in the number of mature individuals. Our knowledge of the species' ecology has recently increased, but further research is needed on this species, particularly regarding its distribution pattern, population size and trend, ecology and threats.

The Tymphrestos Mountain Grasshopper is endemic to Greece. Its distribution is restricted to three mountains in central Greece: Mt. Tymphrestos, Mt. Oiti and Mt. Vardhoussia (Willemse 1984, Willemse et al. 2018, Kati et al. 2022). A recent study delineated its distribution in Oiti Mt (14 km²) and in Tymphrestos Mt (2 km²) (Kati et al. 2022). The distribution of the species in Vardoussia Mt is estimated to be 14 km², based on unpublished data (2022: Stefanidis A: ongoing Ph.D. study). Its estimated area of occupancy (AOO) is 30–40 km² and estimated extent of occurrence (EOO), based on available point data, is 660 km².

There is no available information on this species' population size and trend. The species' population status is considered satisfactory in Oiti Mt; it was recorded in a quarter of the localities investigated and in most cases, its population density was higher than 11 individuals/ 100 m² (Kati et al. 2022). The population in Tymphrestos mountain was in a worse condition since it was more rarely recorded and with a population density of fewer than 10 individuals/ 100 m². The population in Vardoussia Mt is reported to be in favourable condition as well. The population is suspected to be undergoing a continuing decline due to the effects of infrastructure development and grazing. The subpopulations are isolated with no or little genetic exchange, and this species is therefore considered fragmented.

The Tymphrestos Mountain Grasshopper is a high-altitude species usually found above the timberline at elevations above 1,400 m up to 2,400 m. The species was recorded in the mountainous grasslands, including the habitats "Endemic oro-Mediterranean heaths with gorse" (habitat 4090) and the "Species-rich Nardus grasslands" (habitat 6230) annexed under the European Habitats' Directive (habitat 6230 is a priority habitat for conservation). It was also rarely found in fir forest clearings (951B habitat type) and screes (habitat 8140). It favours mild to steep open slopes with high grass and herb cover (>75%), with an average vegetation height of ca 18 cm, where a substantial cover of a stony or rocky substrate (ca 15%) occurs. The species hides under loose stones and short thorny bushes. Dominant plant species in its habitat include Astragalus cylleneus, Festuca jeanphertii, Urtica dioica, Astragalus angustifolius, Festuca jeanphertii and Stipa bromoides (Kati et al. 2022).

A recent shift from mild sheep/goat grazing to cattle grazing has occurred throughout the species' range and particularly in Oiti Mt. The severity of this pressure is unknown, but overgrazing by livestock and cattle trampling are reported to affect negatively affect the population of the species (Kati et al. 2022). Mt. Tymphrestos is used for skiing in the winter, but the effects of all development activities to sustain this touristic activity are unknown. A new wind power station is planned in Oiti Mt, in localities of species presence. This artificial land expansion to the species' habitat will negatively affect the Oiti's subpopulation and might lead to rapid declines. Taking into account the extent of the effects of these threats and the distribution of the species, it is considered to occur at three locations.

The species is in no way used or traded.

No conservation measures are in place for this species, but most of its known localities occur within protected areas of the Natura 2000 network (GR2430001, GR2440004, GR2450008). A study was funded by the Management Unit responsible for the two Natura 2000 sites in Oiti and Tymphrestos mountains (NECCA-Natural Environment & Climate Change Agency). A Ph.D. study is also ongoing (A. Stefanidis). The following conservation measures for enhancing the conservation status of Tymphrestos Mountain Grasshopper are suggested (Kati et al. 2022): (a) banning artificial land generation through touristic, renewable energy sources or other infrastructures within the distribution area of the species, (b) initiating and implementing a grazing management plan, including mapping and assessment of the current grazing pressure in the species habitats, adjusting grazing regimes to maintain the habitat quality of the species (great cover and adequate height of grass/herbs) and maintaining forest openings through grazing in fir forests, (c) initiating a monitoring scheme for the species distribution and population trend, (d) expansion of the Natura 2000 site GR2440004 to the south in Mt Oiti to include the species distribution that is currently outside the network. Further research is needed for the distribution pattern, population size and trend, ecology and threats of the species.