heidesteekmier
CR

heidesteekmier

Myrmica sulcinodis

Unknown

Photo: Wikimedia Commons (CC) via https://en.wikipedia.org/wiki/Myrmica_sulcinodis

Overview

Myrmica sulcinodis is a small reddish-brown ant species with distinctive grooved nodes on its petiole, measuring approximately 4-5mm in length. This specialized ant plays a crucial ecological role as a host species for the endangered large blue butterfly larvae and helps maintain the delicate balance of grassland ecosystems through its complex social structure and foraging behavior.

Myrmica sulcinodis faces severe population declines primarily due to habitat loss and degradation of its specialized heathland and moorland ecosystems. Climate change and agricultural intensification have further reduced the availability of suitable nesting sites and altered the microclimatic conditions this species requires.

Threat summary

Habitat

This species inhabits short, species-rich calcareous grasslands and chalk downs that are maintained by light grazing, particularly favoring areas with wild thyme and other low-growing herbs. The ants construct their nests in well-drained soils with sparse vegetation cover, often on south-facing slopes with specific temperature and moisture requirements.

TERRESTRIAL· major

Frequently asked questions

Why is heidesteekmier classified as Critically Endangered?
heidesteekmier is classified as Critically Endangered — facing an extremely high risk of extinction in the wild — because population sizes are very small, declining sharply, or restricted to a tiny range. Myrmica sulcinodis faces severe population declines primarily due to habitat loss and degradation of its specialized heathland and moorland ecosystems. Climate change and agricultural intensification have further reduced the availability of suitable nesting sites and altered the microclimatic conditions this species requires.
Where does heidesteekmier live?
heidesteekmier occurs in Åland Islands, Andorra, Austria, Belgium, Bulgaria, and Denmark (plus 24 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 heidesteekmier?
The main threats to heidesteekmier 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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