Polyrhachis carbonaria

Quick Summary

• Difficulty: Medium
• Origin & Habitat: Southeast Asia, Indonesia, Malaysia, Philippines, and Singapore. Found in tropical forested areas, typically nesting in vegetation, hollow stems, or under bark ^[2][1][3].
• Colony Type: Colony structure is unconfirmed, but based on typical Polyrhachis patterns, likely single-queen colonies ^[3].
• Size & Growth:
  • Queen: Size data unavailable for queens
  • Worker: Approximately 4.2mm ^[1]
  • Colony: Up to several hundred workers ^[3]
  • Growth: Moderate
  • Development: Estimated 6-10 weeks at optimal temperatures, based on related species ^[3]. (Development time is inferred from tropical Formicinae patterns, specific timing for this species has not been documented.)
• Antkeeping:
  • Temperature: Keep warm, around 24-28°C, as inferred from tropical habitat ^[3].
  • Humidity: Keep substrate consistently moist but not waterlogged, with some drier areas available ^[3].
  • Diapause: No, tropical species do not require hibernation ^[3].
  • Nesting: Arboreal nests such as Y-tong with wood inserts or naturalistic setups with cork bark ^[3].
• Behavior: Docile and non-aggressive. Workers are active foragers. Small size (4.2mm) requires escape prevention with fine mesh ^[3].
• Common Issues: tropical temperature requirements mean colonies can struggle in cool rooms without heating ^[3]., escape prevention is important due to their small size, they can squeeze through standard openings ^[3]., moderate growth rate means colonies take time to develop, requiring patience ^[3]., high humidity needs can lead to mold problems if ventilation is poor ^[3]., wild-caught colonies may carry parasites or diseases that can cause colony failure in captivity ^[3].

Nest Preferences and Housing

Polyrhachis carbonaria is semi-arboreal and prefers nests that mimic tree-dwelling habitats. In the wild, they nest in hollow stems and under bark ^[3]. For captivity, use Y-tong nests with cholla wood inserts or naturalistic setups with cork bark ^[3]. Provide chambers scaled to worker size with moderate humidity retention. Include an outworld with climbing opportunities for foraging ^[3].

Feeding and Diet

In the wild, this species forages for honeydew, nectar, and small insects ^[3]. In captivity, offer sugar water or honey constantly, and protein sources like fruit flies or small crickets two to three times per week ^[3]. Remove uneaten prey after 24-48 hours to prevent mold ^[3].

Temperature and Seasonal Care

As a tropical species, keep temperatures around 24-28°C for optimal health ^[3]. Avoid temperatures below 22°C for extended periods. No diapause is required, maintain consistent warmth year-round ^[3].

Behavior and Colony Dynamics

Polyrhachis carbonaria is docile and non-aggressive, with workers actively foraging ^[3]. Colonies grow at a moderate pace, with first workers appearing smaller than mature workers ^[3]. The species does not exhibit slave-making or parasitism ^[3].

Frequently Asked Questions

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References