VU

Hercostomus rusticus

Unknown

Overview

A detailed profile for this species is sourced from the IUCN Red List of Threatened Species as assessments become available.

Hercostomus rusticus faces significant pressure from agricultural intensification and wetland drainage across its European range. The species' dependence on specific moisture conditions in riparian zones makes it particularly vulnerable to hydrological changes from dam construction and water extraction. Habitat fragmentation has isolated populations, reducing genetic diversity and limiting the species' ability to recolonize suitable areas after local extinctions.

Threat summary

Habitat

This dolichopodid fly inhabits moist riparian zones, marshlands, and wet meadows across temperate Europe. The species requires specific microhabitat conditions with consistent moisture levels and organic-rich substrates for larval development.

Other threatened species in Dolichopodidae

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Frequently asked questions

Why is Hercostomus rusticus classified as Vulnerable?
Hercostomus rusticus is classified as Vulnerable because the population is declining and the species faces a high risk of extinction in the medium-term future if current pressures continue. Hercostomus rusticus faces significant pressure from agricultural intensification and wetland drainage across its European range. The species' dependence on specific moisture conditions in riparian zones makes it particularly vulnerable to hydrological changes from dam construction and water extraction. Habitat fragmentation has isolated populations, reducing genetic diversity and limiting the species' ability to recolonize suitable areas after local extinctions.
Where does Hercostomus rusticus live?
Hercostomus rusticus occurs in Austria, Estonia, France, Germany, Hungary, and Mongolia (plus 5 other countries). Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Hercostomus rusticus?
The main threats to Hercostomus rusticus are ai-1, ai-2, ai-3, and ai-4. The full IUCN-classified threat record for this species is detailed on the species page.

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