Myrmicocrypta ogloblini

Quick Summary

• Difficulty: Expert
• Origin & Habitat: Northern Argentina (Santa Fe and Misiones provinces) in the Neotropical region. These areas feature warm temperatures year-round with high humidity, typical of subtropical forest environments ^[1].
• Colony Type: Colony structure is unconfirmed. Like other Attini, this species may form single-queen colonies, though this has not been documented for this specific species.
• Size & Growth:
  • Queen: Size data unavailable, queen has not been described in literature
  • Worker: Worker described by Santschi in 1936,exact measurements not available in current dataset
  • Colony: Unknown, no colony size data available
  • Growth: Unknown, no development data available
  • Development: Unknown, no direct development data exists for this species. (Development timeline is unconfirmed. Related fungus-growing ants typically take several months from egg to worker at warm temperatures.)
• Antkeeping:
  • Temperature: Keep at warm temperatures around 24-28°C. This aligns with their classification as Tropical Climate Specialists and the warm climate of their native range in northern Argentina ^[1]. A heating cable on one side of the nest creates an appropriate gradient.
  • Humidity: High humidity is essential, similar to other Attini species. Keep the nest substrate consistently moist but not waterlogged. Fungus-growing ants need damp conditions for their fungal cultures to thrive. Aim for 70-80% humidity in the nest area.
  • Diapause: Unknown, no documented hibernation requirement. Given their tropical origin from northern Argentina, they likely do not require a diapause period.
  • Nesting: In nature, Attini species typically nest in soil or rotting wood. For captivity, a naturalistic setup with moist substrate (like a mixture of soil and organic material that can support fungus growth) works well. Y-tong (AAC) or plaster nests with moisture reservoirs are also suitable, provided humidity is maintained.
• Behavior: Behavior is poorly documented for this specific species. As Attini, they are fungus-cultivators that focus on tending their fungal gardens. Workers are small and may be capable of escaping through small gaps, use fine mesh barriers and tight-fitting lids. They possess a functional stinger typical of Myrmicinae, though their small size means any sting would be minor.
• Common Issues: this species is extremely rare in the antkeeping hobby due to limited distribution and documentation, fungus cultivation is complex, the fungal culture may die if conditions are not optimal, starving the colony, high humidity requirements create mold risk in captive setups, no established husbandry protocols exist, keepers must experiment with care conditions, one record is marked as dubious, actual range may be more limited than literature suggests ^[2]

Fungus-Growing Special Requirements

Myrmicocrypta ogloblini belongs to the tribe Attini, meaning it is a fungus-growing ant. This is the most critical aspect of keeping this species. Unlike typical ants that eat protein foods directly, Attini ants cultivate a fungal garden and feed exclusively on the fungus they grow. In captivity, you must provide suitable organic material for the fungus to grow on. This typically involves providing pieces of decaying plant material, leaves, or specialized fungus-growing substrate. The challenge is maintaining a healthy fungal culture while keeping conditions suitable for the ants. The fungus requires high humidity and warmth to thrive. If the fungal culture dies, the colony will starve. This makes Myrmicocrypta ogloblini one of the most challenging ant species to keep, only experienced antkeepers should attempt this species. ^[1]

Temperature and Humidity Management

As a Tropical Climate Specialist, this species requires warm and humid conditions year-round. Maintain nest temperatures between 24-28°C, avoiding any prolonged drops below 22°C. A small heating cable placed on part of the nest can help maintain these temperatures. Humidity is equally critical, aim for 70-80% relative humidity within the nest. The substrate should remain consistently moist but never waterlogged. Standing water in the nest can drown the fungal culture and the colony. Use a moisture reservoir system or careful misting to maintain appropriate dampness. Monitor for mold growth, as the warm, humid conditions that benefit the fungus also promote harmful molds. Good ventilation helps balance humidity with fresh air. ^[1]

Housing and Nest Setup

A naturalistic setup is recommended for this species, as it supports the fungal cultivation that Attini require. Use a container filled with moist substrate (a mix of soil and organic material works well). The depth should allow for the ants to create chambers and tend their fungal garden. Y-tong (AAC) or plaster nests with water reservoirs can work if you provide a section for fungus cultivation, though these are less ideal than naturalistic setups. Regardless of nest type, ensure excellent escape prevention, these are small ants that can slip through standard gaps. Use fine mesh on any ventilation holes and ensure all connections are sealed. A foraging area should be provided where you can add fresh organic material for the fungus to grow on.

Acquiring This Species

Myrmicocrypta ogloblini is extremely rare in the antkeeping hobby. It is not a species you will find readily available from commercial ant sellers. This species is only known from a limited number of records in Argentina, and there are no established captive breeding programs. One recorded occurrence is marked as dubious in the literature ^[2]. If you wish to keep this species, your options are limited to attempting to locate wild colonies in its native range (with appropriate permits) or connecting with researchers studying Argentine ants. Given the extreme difficulty of establishing and maintaining fungus-growing ants in captivity, combined with the lack of documented husbandry protocols, this species is not recommended for any but the most dedicated and experienced antkeepers with specific interest in exotic Attini species.

Frequently Asked Questions

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References