Polyrhachis kyawthani

Quick Summary

• Difficulty: Hard
• Origin & Habitat: New Ireland, Papua New Guinea, rainforest canopy, silk nests on underside of leaves ^[1]
• Colony Type: Unconfirmed, only known from wild collections with one queen and multiple workers
• Size & Growth:
  • Queen: ~9.32 mm ^[1]
  • Worker: 6.35-7.56 mm ^[1]
  • Colony: Up to 58 workers ^[1]
  • Growth: Unknown
  • Development: Unknown, no development data available (Pupal cocoons are absent in this species ^[2][3].)
• Antkeeping:
  • Temperature: Keep around 24-28°C based on rainforest origin ^[1].
  • Humidity: Keep nest substrate consistently moist but not waterlogged, as this is a rainforest species ^[1].
  • Diapause: No, tropical species from near equator ^[1].
  • Nesting: Arboreal silk-nester. Requires vertical setup with attachment surfaces for silk. Use Y-tong or plaster nests with vertical space and foliage ^[2][3].
• Behavior: As a Formicinae, they lack a sting and use formic acid spray for defense. Temperament is unconfirmed, but arboreal foragers may be moderate in aggression. Escape risk is medium due to size.
• Common Issues: no captive husbandry records exist, this is an extremely rare species with no established care protocols., very limited distribution makes wild collection difficult and potentially ecologically harmful., humidity control is critical, rainforest species prone to desiccation., arboreal nesting requirements differ from typical ground-nesting ants, standard horizontal nests are unsuitable., defense mechanism involves formic acid spray, avoid direct contact.

Nesting and Housing Requirements

Polyrhachis kyawthani is an arboreal species that constructs silk nests in the rainforest canopy. In the wild, colonies nest on the underside of leaves attached to low trees ^[2][3]. Captive setups must accommodate their arboreal lifestyle with vertical space and attachment surfaces for silk. Use branches, leaves, or cork bark positioned vertically. The nest should have high humidity but good ventilation to prevent mold ^[1].

Feeding and Diet

Dietary requirements are not documented for this species. As a Polyrhachis ant, they likely accept sugar sources and small insects, but this is unconfirmed. Start with honey or sugar water and protein like fruit flies, and observe acceptance ^[1].

Temperature and Humidity

Maintain temperatures around 24-28°C based on rainforest origin ^[1]. Keep humidity high with moist substrate, but avoid waterlogging to prevent mold ^[1].

Colony Structure and Development

The only known colony data comes from a type series with one queen and up to 58 workers, suggesting monogyne colonies, but this is unconfirmed ^[1]. Males are unknown, and pupal cocoons are absent ^[2][3]. Founding behavior is unconfirmed.

Behavior and Temperament

Specific behaviors are not documented. As a Formicinae, they use formic acid spray for defense rather than stinging. Arboreal foragers may be moderate in aggression. Escape prevention is important due to medium size ^[1].

Frequently Asked Questions

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References