amazonmyra
ENEndangered

amazonmyra

Polyergus rufescens

**Polyergus rufescens (Amazonmyra)** Polyergus rufescens, commonly known as the amazonmyra or slave-making ant, is a specialized parasitic ant species characterized by its reddish-brown coloration and distinctive sickle-shaped mandibles. These ants exhibit unique social parasitic behavior, conducting raids on colonies of Formica species to capture pupae, which are then raised as workers in their own nests.

34

Countries

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

01Classification

Taxonomy & Classification

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hymenoptera

Family

Formicidae

Genus

Polyergus

amazonmyra belongs to the family Formicidae, order Hymenoptera, within the Insecta class.

02Description

Species Profile

**Polyergus rufescens (Amazonmyra)** Polyergus rufescens, commonly known as the amazonmyra or slave-making ant, is a specialized parasitic ant species characterized by its reddish-brown coloration and distinctive sickle-shaped mandibles. These ants exhibit unique social parasitic behavior, conducting raids on colonies of Formica species to capture pupae, which are then raised as workers in their own nests. The captured ants perform all colony maintenance tasks, as P. rufescens workers are morphologically adapted solely for raiding and cannot perform basic survival functions like foraging or nest construction. This species inhabits dry grasslands, forest edges, and sandy soils across parts of Europe and North America. Historically documented in scattered locations throughout these regions, P. rufescens requires specific microhabitat conditions and proximity to suitable host ant colonies for survival. The species faces significant threats from habitat fragmentation and loss of suitable nesting sites. Agricultural intensification and urban development have reduced available grassland habitats, while the decline of host Formica populations directly impacts P. rufescens survival. Climate change may further restrict suitable habitat ranges, as the species appears sensitive to temperature and moisture variations. Current conservation efforts remain limited, with most initiatives focused on broader habitat preservation rather than species-specific measures. Research into population dynamics and ecological requirements continues in several European countries. The outlook for P. rufescens remains uncertain. Its specialized lifestyle, dependence on host species, and habitat requirements make recovery challenging. Without targeted conservation interventions and habitat restoration, population decline may continue, though comprehensive population assessments are needed to determine actual trends.

Based on the available data, the primary threats to amazonmyra (Polyergus rufescens) have not been assessed or documented by researchers. Without a formal threat evaluation, it's unclear what specific dangers this species faces in its natural habitat. The status of threats to this species cannot be determined as increasing, stable, or decreasing due to the lack of assessment data.

Key Facts

IUCN StatusEndangered (EN)
GroupInsects
03Habitat

Habitat & Distribution

TERRESTRIALMajor
04Threats

Threats

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IUCN Red List: Endangered

Based on the available data, the primary threats to amazonmyra (Polyergus rufescens) have not been assessed or documented by researchers. Without a formal threat evaluation, it's unclear what specific dangers this species faces in its natural habitat. The status of threats to this species cannot be determined as increasing, stable, or decreasing due to the lack of assessment data.

Detailed threat classification data is sourced from IUCN assessments as they become available.

Community

Community Sightings

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07Sources

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

This page: SpeciesRadar (2025). amazonmyra (Polyergus rufescens). SpeciesRadar: Intelligence for Earth's Biodiversity. Available at: https://speciesradar.org/species/amazonmyra

Full citation guide & data usage terms