Paratrachymyrmex diversus

Quick Summary

• Difficulty: Medium
• Origin & Habitat: Wet forests in northern South America, including Brazil, Colombia, Ecuador, French Guiana, Guyana, Suriname, and Venezuela ^[1][2][3]. Type locality is Rio Madeira, Brazil ^[7].
• Colony Type: Colony structure is unconfirmed, no specific data on queen number or social structure.
• Size & Growth:
  • Queen: Size data unavailable, no total length measurements provided in research context.
  • Worker: Size data unavailable, no total length measurements provided in research context.
  • Colony: Colony size data unavailable for this species.
  • Growth: Moderate, inferred from fungus-farming behavior, which adds time to development compared to non-fungus-growing ants.
  • Development: Estimated 8-12 weeks at optimal temperature, based on typical Attini patterns, no species-specific data available. (Fungus cultivation requires stable conditions, development may be slower than non-fungus-growing ants.)
• Antkeeping:
  • Temperature: Keep at 24-28°C, these are tropical wet forest ants requiring warm, stable temperatures ^[2][3]. Use a heating cable to create a gentle gradient if needed.
  • Humidity: Keep the nest substrate consistently moist but not waterlogged, reflecting their wet forest habitat ^[2][3]. Provide a water tube and occasional misting.
  • Diapause: No, as a tropical species, they do not require hibernation. Maintain warm conditions year-round.
  • Nesting: In nature, they nest in soil on the forest floor. In captivity, use Y-tong (AAC) or plaster nests that retain humidity. Provide a foraging area with access to fresh plant material.
• Behavior: P. diversus is aggressive and will defend its nest, unlike typical Trachymyrmex that feign death ^[5][6]. Workers forage actively and cut fresh plant material ^[5][6]. Escape prevention is critical due to their small size, use fine mesh and secure barriers.
• Common Issues: fungus garden failure is the biggest risk, if the fungal cultivar dies, the colony cannot survive ^[2]., high humidity can lead to mold if ventilation is inadequate., aggressive behavior means they may bite if threatened, handle gently and use escape barriers., slow growth compared to non-fungus-growing ants may require patience., wild-caught colonies may carry Escovopsis parasites that attack the fungus garden ^[2][9].

Fungus Farming and Diet

P. diversus cultivates Leucoagaricus gongylophorus and clade B fungi ^[2][3]. They collect substrates like seeds, insect frass, and dry plant debris, and occasionally fresh leaves or flowers ^[8]. In captivity, provide small pieces of fresh leaves, flower petals, and tender shoots regularly. Avoid processed foods or preservatives, as they feed on the fungus, not the plant material directly.

Nest Setup and Housing

Use Y-tong (AAC) or plaster nests that hold humidity well. Nest chambers should be small to match their size. Provide a water tube for moisture and a secure outworld with fine mesh ventilation to prevent escapes. The foraging area should have a platform for fresh plant material. ^[2][3]

Temperature and Humidity

Maintain 24-28°C with a heating cable if needed, and keep humidity high but not waterlogged. Mist occasionally and ensure good ventilation to prevent mold ^[2][3].

Behavior and Defense

Workers are aggressive and will defend the nest, unlike death-feigning Trachymyrmex species ^[5][6]. They forage actively and show size variation within colonies ^[5]. Handle gently and use escape barriers due to their small size.

Growth and Development

Fungus farming slows development, expect moderate growth. The queen must cultivate fungus before raising workers, so patience is needed. Egg to worker timeline is estimated based on Attini patterns, as no species-specific data is available.

Health Concerns

Fungus garden failure is the primary risk, often due to improper conditions or parasites like Escovopsis ^[2][9]. Monitor for mold and contamination, and quarantine wild-caught colonies.

Frequently Asked Questions

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References