Isophya harzi
Isophya harzi is a critically endangered species of bush-cricket endemic to a small region in the Eastern Alps. This orthopteran insect belongs to the family Tettigoniidae and represents one of the most geographically restricted members of its genus.
↓Decreasing
Population trend
1
Countries
Taxonomy & Classification
Kingdom
ANIMALIA
Phylum
ARTHROPODA
Class
INSECTA
Order
ORTHOPTERA
Family
TETTIGONIIDAE
Genus
Isophya
Isophya harzi belongs to the family TETTIGONIIDAE, order ORTHOPTERA, within the INSECTA class.
Species Profile
Isophya harzi is a critically endangered species of bush-cricket endemic to a small region in the Eastern Alps. This orthopteran insect belongs to the family Tettigoniidae and represents one of the most geographically restricted members of its genus. The species was first described relatively recently and is known from extremely limited localities, primarily in alpine and subalpine grassland habitats at specific elevations. Like other Isophya species, I. harzi is characterized by its distinctive morphological features and acoustic properties, with males producing species-specific calling songs used for mate attraction. The species occupies specialized ecological niches within mountain grassland ecosystems, where it plays a role in local food webs both as herbivore and prey species. Its critical conservation status reflects the severe constraints on its distribution and the ongoing pressures facing its habitat. The primary threats to I. harzi include habitat degradation and loss due to changes in traditional land management practices, climate change effects on alpine ecosystems, and the species' extremely limited range which makes it vulnerable to local extinctions. Conservation efforts for this species face challenges due to its restricted distribution and specialized habitat requirements. Research into its ecology, population dynamics, and specific habitat needs remains essential for developing effective conservation strategies. The species serves as an indicator of the health of alpine grassland ecosystems and highlights the conservation challenges facing endemic invertebrates in mountain regions.
Isophya harzi faces severe threats from habitat loss and degradation caused by changes in traditional alpine land management practices and agricultural intensification. Climate change poses additional risks by altering the temperature and precipitation patterns of its specialized mountain grassland habitat. The species' extremely restricted geographic range makes it particularly vulnerable to local extinction events.
Key Facts
Habitat & Distribution
Isophya harzi inhabits alpine and subalpine grasslands in the Eastern Alps at specific elevational ranges. The species requires specialized mountain grassland ecosystems with particular vegetation characteristics and microclimate conditions.
Threats
IUCN Red List: Critically Endangered
Isophya harzi faces severe threats from habitat loss and degradation caused by changes in traditional alpine land management practices and agricultural intensification. Climate change poses additional risks by altering the temperature and precipitation patterns of its specialized mountain grassland habitat. The species' extremely restricted geographic range makes it particularly vulnerable to local extinction events.
Livestock farming & ranching
Conservation Actions
Found in 1 Country
National vs Global Threat Status
How this species is assessed at the national level compared to its IUCN global status (CR).
| Country | National Status | Global Status | Comparison |
|---|---|---|---|
| EU | CRCritically Endangered | CRCritically Endangered | Same |
| EU | CRCritically Endangered | CRCritically Endangered | Same |
National Red List data sourced from the National Red List Project (nationalredlist.org, ZSL) and country-specific Red List authorities.
Community Sightings
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Sources & Attribution
How to Cite
IUCN: IUCN (2025). The IUCN Red List of Threatened Species. Version 2025-1. Available at: https://www.iucnredlist.org. doi:10.2305/IUCN.UK.2025-1.RLTS
GBIF: GBIF.org (2025). GBIF Home Page. Available at: https://www.gbif.org
National Red Lists: ZSL (2025). National Red List. Zoological Society of London. Available at: https://www.nationalredlist.org
This page: SpeciesRadar (2025). Isophya harzi (Isophya harzi). SpeciesRadar: Intelligence for Earth's Biodiversity. Available at: https://speciesradar.org/species/cozia-plump-bush-cricket