Odontomachus coquereli

Quick Summary

• Difficulty: Medium
• Origin & Habitat: Endemic to Madagascar, found in eastern and northern montane rainforest, lowland rainforest, and littoral forest from 10 to 1,325 m elevation ^[1][2]. Nests in rotten logs and branches on the ground in primary rainforest ^[3][1].
• Colony Type: Single-ergatoid queen colonies with fission reproduction. Colonies split when they reach about 40 workers ^[3][1].
• Size & Growth:
  • Queen: size data unavailable
  • Worker: size data unavailable
  • Colony: Up to 40 workers ^[1][2]
  • Growth: Slow
  • Development: Unknown, no direct data. Based on Ponerinae patterns, likely 8-12 weeks at optimal temperature ^[1]. (Colony growth is slow, colonies max out at around 40 workers before fission occurs.)
• Antkeeping:
  • Temperature: Keep at 22-26°C, based on habitat conditions ^[1]. A heating cable can create a gradient ^[4].
  • Humidity: Keep nest substrate consistently moist but not waterlogged, as they inhabit rainforests ^[1]. Provide a water tube ^[4].
  • Diapause: Unknown for this species ^[3].
  • Nesting: In nature, they nest in rotten logs ^[3][1]. In captivity, use naturalistic setups with rotting wood or plaster nests.
• Behavior: Workers forage solitarily on the ground day and night ^[1][2]. They are active climbers, so escape risk is moderate, use standard barriers ^[4].
• Common Issues: colonies remain very small, with up to 40 workers, so not suitable for those wanting large colonies, fission reproduction is slow, colonies take a long time to reach the threshold size for splitting, humidity must be maintained, drying out causes colony decline, no established captive breeding protocols, this species is rarely kept and not well-studied in captivity, ergatoid queen replacement means wild-caught colonies may already be at or near fission threshold

Nest Preferences and Housing

Odontomachus coquereli naturally nests in rotting wood, specifically rotten logs and branches on the rainforest floor ^[3][1]. In captivity, provide a naturalistic setup with cork, rotting wood, or a well-moistened plaster or Y-tong nest. They prefer tight chambers and humid conditions. Because colonies max out at only 40 workers, a small to medium setup is adequate. The nest material should retain moisture, and a water tube helps maintain humidity ^[4].

Feeding and Diet

O. coquereli is a predatory ant that hunts small invertebrates. Workers forage solitarily on the ground day and night ^[1][2]. In captivity, offer small live prey such as fruit flies, small crickets, and mealworms. Provide protein 2-3 times per week and a constant sugar source like honey water. Remove uneaten prey after 24 hours to prevent mold ^[4].

Temperature and Seasonal Care

Keep your colony at 22-26°C, mimicking the warm conditions of Madagascar's rainforests ^[1]. A heating cable placed on part of the nest creates a temperature gradient. Diapause requirements are unknown, but Madagascar has mild seasons, so a reduced activity period in winter may be beneficial ^[3].

Colony Reproduction: The Fission System

This species reproduces by fission: when a colony reaches about 40 workers, the wingless ergatoid queen walks out with a group of workers to establish a new nest ^[3][1]. This explains why wild colonies never exceed 40 workers. For keepers, colonies grow slowly and max out small. To propagate, provide extra space or allow the colony to reach its natural threshold.

Understanding Ergatoid Queens

The queen caste is wingless (ergatoid) and looks similar to workers, with a larger abdomen for reproduction ^[3][1]. Each colony has one ergatoid queen dedicated solely to reproduction ^[5]. If the queen dies, workers can lay male eggs ^[3]. Wild-caught colonies may already have an established ergatoid queen.

Frequently Asked Questions

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References