Paratrachymyrmex carib

Quick Summary

• Difficulty: Medium
• Origin & Habitat: Native to Trinidad and Tobago, with records from Panama and Brazil. Presumably inhabits tropical forests, but specific habitat preferences are undocumented ^[1][2][3][4].
• Colony Type: Unconfirmed, no studies on social structure are available.
• Size & Growth:
  • Queen: Unknown, no measurements recorded.
  • Worker: Unknown, no measurements recorded.
  • Colony: Unknown, no data on colony size exists.
  • Growth: Unknown, no specific data.
  • Development: Unknown, no documented timeline. (No specific data available for this species.)
• Antkeeping:
  • Temperature: Unknown, based on tropical distribution, likely requires warm conditions (around 24-28°C) ^[4]. A stable, warm setup is advised, but optimal ranges are unconfirmed.
  • Humidity: Unknown, given its fungus‑growing nature, high humidity (substrate kept consistently moist but not waterlogged) is probably needed ^[1]. Specific targets are unknown.
  • Diapause: No, as a tropical species it does not require hibernation ^[4].
  • Nesting: Unknown, likely nests in soil or decaying wood, needing a chamber to accommodate a fungal garden ^[1]. Y‑tong (AAC) or plaster nests with good moisture retention are a reasonable guess, but no tested design exists for this species.
• Behavior: Unknown, no direct observations are recorded. As an attine ant, it is probably docile and non‑aggressive. It possesses a functional sting (typical of Myrmicinae) but no medical significance is known.
• Common Issues: fungal garden death due to improper humidity or temperature, the colony depends entirely on the fungus for food., mold or pathogen contamination of the fungal cultivar causing colony collapse., difficulty establishing a colony without a viable fungal starter, queens require a piece of fungus to initiate the garden.

Taxonomy and Distribution

Paratrachymyrmex carib was originally described as Paratrachymyrmex carib by Weber in 1945 based on workers from Trinidad. It was later moved to the genus Paratrachymyrmex by Solomon et al. in 2019. The type locality is Trinidad and Tobago, but a syntype worker in the MZSP comes from Panama (Barro Colorado Island), indicating a wider distribution. More recently, it has been recorded in Brazil (Pará state), confirming its presence in northern South America. The genus Paratrachymyrmex contains only nine described species ^{[1][2][4][3][5]}.

Fungal Cultivation (General)

As a member of the tribe Attini, Paratrachymyrmex carib is presumed to practice fungus‑growing agriculture. In all studied Attini, the queen carries a small plug of the symbiotic fungus in her infrabuccal pocket when she founds a new colony. The fungus is the colony’s sole food source, the ants provide it with organic matter (e.g., leaf fragments, caterpillar frass) and protect it from competitors. If the fungus dies, the colony cannot survive. However, no specific details on the fungal cultivar or cultivation behavior of this species have been published ^[1].

Care Requirements (General)

Because no captive‑rearing data for Paratrachymyrmex carib exists, care suggestions must be inferred from related Attini. Tropical temperatures (24-28°C) and high humidity are likely essential. The nest should provide a dark, moist chamber where the fungal garden can grow. Y‑tong (AAC) or plaster nests with a water reservoir are common for fungus‑growers. Ventilation must balance moisture retention with fresh air to prevent mold. A heating cable on the nest can help stabilize temperatures. Avoid acrylic nests, as they tend to be too dry. Regular misting may be needed, but waterlogging should be avoided ^[1][4].

Challenges in Captivity

The main difficulty in keeping this species is maintaining a healthy fungal garden. The fungus requires stable moisture and temperature, and can be killed by contamination (e.g., mould from over‑fertilized substrate or poor ventilation). Even with proper physical conditions, the colony may starve if the fungal cultivar is lost. In addition, the founding stage is critical: the queen must carry a viable piece of fungus to start the garden, without it, the colony cannot develop. Because Paratrachymyrmex carib is little‑studied, keepers should be prepared for trial‑and‑error and have backup plans (e.g., spare fungal cultures from other Attini). There is no evidence that this species is invasive or protected.

Frequently Asked Questions

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References