Polyrhachis mutata

Quick Summary

• Difficulty: Medium
• Origin & Habitat: Native to the Indomalaya region, found in tropical forests across Borneo, India, Indonesia, Malaysia, and Myanmar ^[1][2]. In India, recorded from Meghalaya in the East Khasi Hills ^[1].
• Colony Type: Unconfirmed, colony structure has not been directly documented for this species.
• Size & Growth:
  • Queen: size data unavailable, no total length measurements in context
  • Worker: 7-8 mm ^[1][3]
  • Colony: up to several hundred workers, inferred from Polyrhachis genus patterns
  • Growth: Moderate, inferred
  • Development: Estimated 6-10 weeks at optimal temperature, inferred from Formicinae patterns (Development time may vary with temperature, warmer conditions accelerate growth)
• Antkeeping:
  • Temperature: Keep at 24-28°C, tropical species requires warm conditions ^[2]
  • Humidity: Keep nest substrate consistently moist but not waterlogged ^[2]
  • Diapause: No, tropical species does not require diapause ^[2]
  • Nesting: Provide moist nest with chambers, Y-tong, plaster, or soil nests work well, inferred from genus preferences
• Behavior: Workers are docile and slow-moving, not aggressive, and primarily nocturnal ^[2]. Their large spines make them harder for predators to handle.
• Common Issues: temperature sensitivity, colonies decline rapidly if kept below 22°C for extended periods, humidity loss, dry conditions cause colony failure, monitor substrate moisture closely, slow growth, beginners may lose patience with moderate development speed, escape risk, good climbers, require barriers like fluon on outworld rims, founding fragility, queen mortality higher if disturbed during claustral founding

Housing and Nest Setup

Polyrhachis mutata does well in several nest types, but all should provide consistent humidity and darkness. Y-tong nests, plaster nests, or naturalistic setups with soil substrate work well ^[2]. The outworld should be spacious for foraging and include a water source. Because these ants are climbers, apply a barrier like fluon or oil grease around the rim to prevent escapes ^[2].

Feeding and Diet

Polyrhachis mutata is omnivorous. Offer sugar sources like sugar water or honey, and protein from small insects like fruit flies or crickets ^[2]. Feed protein 2-3 times per week and remove uneaten prey to prevent mold.

Temperature and Humidity Management

Maintain nest area at 24-28°C consistently. Use a heating cable on one side for a temperature gradient ^[2]. Humidity should be high, keep nest substrate moist but not waterlogged ^[2].

Colony Development and Growth

A newly mated queen may seal herself in a chamber for claustral founding, but this is unconfirmed for this species. First workers may emerge in 6-10 weeks under optimal conditions, with growth moderate over 1-2 years ^[2].

Behavior and Observation

Workers are calm and deliberate, making them good for observation. They are not aggressive and primarily active at night. Their spines serve a defensive function ^[1].

Frequently Asked Questions

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References