Polyrhachis aurea

Quick Summary

• Difficulty: Medium
• Origin & Habitat: Australia, Papua New Guinea, and Solomon Islands. Subtropical to tropical regions, nesting underground in soil ^[1][3][2].
• Colony Type: Unconfirmed, based on typical Polyrhachis patterns, likely monogyne (single queen).
• Size & Growth:
  • Queen: Size data unavailable, inferred from Polyrhachis genus (~8-12 mm)
  • Worker: Size data unavailable, inferred from Polyrhachis genus (~4-10 mm)
  • Colony: Up to several hundred workers, estimated based on related Polyrhachis species
  • Growth: Moderate
  • Development: Estimated 6-8 weeks at optimal temperature, inferred from Formicinae patterns (Development time is inferred since species-specific data is unavailable)
• Antkeeping:
  • Temperature: Keep nest area warm, roughly 24-28°C, based on genus patterns for Australian species.
  • Humidity: Maintain moderate to high substrate moisture. Keep nest substrate consistently damp but not waterlogged ^[3].
  • Diapause: Unconfirmed for this species.
  • Nesting: Subterranean nesters, prefer compact soil in captivity ^[3][4].
• Behavior: Polyrhachis aurea workers are moderately active and not typically aggressive. They use spines for defense and are omnivorous. Escape risk is moderate due to medium size.
• Common Issues: subterranean nesting requires adequate soil depth to prevent colony stress., poor humidity control can lead to brood mortality during molting., temperature fluctuations may slow colony growth.

Nest Preferences and Housing

Polyrhachis aurea is a subterranean nester, meaning they naturally dig nests in soil underground ^[3][4]. In captivity, provide compact, damp substrate rather than loose sandy soil. A naturalistic setup with a deep soil layer allows them to create proper chambers. Alternatively, Y-tong nests with narrow chambers or plaster nests with water reservoirs work well. Avoid test tube setups, as they don't accommodate subterranean needs.

Feeding and Diet

Polyrhachis aurea is omnivorous. Offer constant sugar sources like sugar water or honey. Provide protein such as fruit flies or mealworms 2-3 times per week. Remove uneaten prey after 24 hours to prevent mold.

Temperature and Heating

Keep nest temperatures warm, around 24-28°C, based on genus patterns for Australian species. Use a heating cable on one side to create a gradient. Room temperature may be acceptable in warmer climates.

Humidity and Water

Maintain moderate to high humidity. Keep nest substrate consistently damp but not waterlogged ^[3]. In Y-tong or plaster nests, fill water reservoirs regularly. Mist the outworld occasionally but avoid direct spraying on the nest.

Behavior and Temperament

Workers are moderately active and not typically aggressive. They defend nests using spines and formic acid spray. Escape risk is moderate, standard barriers and tight lids are sufficient.

Colony Development and Growth

Colony growth is moderate. Pupal cocoons are present ^[3], so handle brood carefully. Full maturity may take 1-2 years.

Frequently Asked Questions

Report an Issue

The current care sheet is based fully on literature. See inconsistencies, or something that's incorrect? Please report here, it will be resolved after review from an admin. Contributing to the blogs tab also helps providing information, to make us be able to further improve the caresheets. Thank you for your support!

References