Polyrhachis laevissima

Quick Summary

• Difficulty: Medium
• Origin & Habitat: Southeast Asia, including Myanmar, India, Thailand, Malaysia, Sumatra, Java, and Borneo. Found in forest and grassland habitats, absent from human-modified areas ^[4][5][8].
• Colony Type: Unconfirmed, colony structure not well documented.
• Size & Growth:
  • Queen: 8-10 mm ^[2]
  • Worker: 6-7 mm ^[1]
  • Colony: Unknown, no colony size data available
  • Growth: Moderate, estimated from related Polyrhachis species
  • Development: Unknown, no specific data available (Estimated based on genus patterns, may take 6-8 weeks in tropical temperatures)
• Antkeeping:
  • Temperature: Keep warm, around 24-28°C, as this species is from tropical regions ^[1][3].
  • Humidity: Maintain moderate to high humidity by keeping the substrate consistently moist but not waterlogged ^[8][4].
  • Diapause: Unknown, as a tropical species, hibernation is unlikely, but no specific data exists.
  • Nesting: Arboreal nests using carton material ^[6][7]. In captivity, provide vertical structures like branches or cork bark, and use Y-tong nests with climbing access.
• Behavior: Workers are calm and non-aggressive, foraging on the ground ^[4][5]. Escape risk is moderate due to medium size, use standard barriers. Defense mechanism is spraying formic acid, typical for Formicinae.
• Common Issues: cold temperatures can slow or stop brood development ^[8], lack of vertical space may prevent proper nesting ^[6][7], disturbance may stress the colony, as they are absent from human habitats ^[4][5], limited data means care is estimated, monitor colony closely, ground-foraging behavior requires food placement on nest surface ^[4][5]

Behavior and Colony Dynamics

Workers are active foragers that search for food on the ground surface ^[4][5]. They are not particularly aggressive, making them manageable in captivity. The colony grows at a moderate pace, but specific growth data is unavailable. Polyrhachis species produce naked pupae without cocoons ^[6], so you may see pupae directly before emergence. Queens are relatively large and should be handled gently during founding. The species has been found in urban areas of Bangkok ^[9], suggesting some tolerance for human presence, but they are absent from heavily developed habitats.

Frequently Asked Questions

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References