Slender Ground-hopper
Tetrix subulata
The Slender Ground-hopper is a small orthopteran species whose pronotum extends backward into a long, saber-like process. This process typically extends well beyond the hind knees and protects the fully developed hind wings underneath. Its coloration is highly variable, ranging from light brown and grey to almost black, often featuring dark spotted patterns.
Details
Identification
Long pronotum extending well beyond the tip of the abdomen; fully developed hind wings; slender build; vertex wider than an eye.
Social behavior
Solitary, but occurs in high population densities under optimal environmental conditions.
Diet
Feeds on algae, mosses, lichens, and organic detritus on the ground.
Spawning substrate
Eggs are laid in moist soil or among moss.
Overwintering
Usually overwinters as an adult or larva in moss cushions, soil crevices, or under vegetation.
Ecology
Ecological role
Important consumer of algae and moss growth in moist pioneer ecosystems.
Natural predators
Birds, amphibians (e.g., frogs), spiders, and predatory ground beetles.
Competitor species
Other ground-hopper species such as Tetrix tenuicornis or Tetrix undulata.
Ecosystem service
Support of the nutrient cycle through the decomposition of detritus and algae.
Threats
Loss of wetlands due to drainage, intensive agriculture, and the channelization of natural riverbanks.
Scientific profile
Profile
Distinguishing features
Characterized by a long pronotal process that usually extends well beyond the hind knees. The hind wings are fully developed and often slightly exceed the pronotum. The upper edge of the pronotum is almost straight or only very slightly arched in profile (name 'subulata' = awl-shaped).
Habitat
Hygrophilous species preferring moist to wet sites: riparian zones of standing and flowing waters, bogs, wet meadows, ditches, and temporarily flooded areas. Patches of bare soil (mud, sand) are essential.
Diet
Herbivorous and detritivorous; feeds mainly on algae (diatoms, green algae), mosses, lichens, and organic detritus on the ground.
Role in food web
Primary consumer and decomposer of microflora; serves as prey for amphibians (e.g., fire-bellied toads), birds, and predatory invertebrates in wetlands.
Protection & threats
Main threats
Drainage of wetlands, intensification of agriculture, canalization of riverbanks, and loss of pioneer sites due to succession (scrub encroachment).
Population trend
Widely distributed and mostly stable in Central Europe, but locally threatened by habitat loss.
Conservation measures
Preservation and restoration of wetlands, promotion of floodplain dynamics, creation and maintenance of pioneer sites near water bodies.