Myrmecina tridentata

Quick Summary

• Difficulty: Medium
• Origin & Habitat: Borneo, Malaysia (Sabah and Sarawak) in the Indomalaya region. They inhabit soil in what is typically a humid tropical rainforest environment ^[1][2].
• Colony Type: Colony structure is unconfirmed. Based on typical Myrmecina patterns, likely single-queen colonies with relatively small colony sizes.
• Size & Growth:
  • Queen: Unconfirmed, likely 4-6mm inferred from genus patterns
  • Worker: 3.28-3.51mm ^[1]
  • Colony: Up to 100 workers estimated based on similar Myrmecina species
  • Growth: Moderate, inferred from tropical soil-dwelling habits
  • Development: Estimated 6-10 weeks at optimal tropical temperatures based on genus patterns (Direct development data unavailable for this species, estimate based on related Myrmecina species in tropical conditions)
• Antkeeping:
  • Temperature: Keep at 24-28°C. Being from tropical Borneo, they need warm conditions. A heating cable on one side of the nest creates a gradient ^[2].
  • Humidity: High humidity required, think damp forest floor. Keep the nest substrate consistently moist but not waterlogged. Provide a water tube for drinking access ^[2].
  • Diapause: Unlikely, being from tropical Borneo, they probably do not require hibernation. However, slight seasonal cooling may trigger reduced activity in winter months.
  • Nesting: Soil-dwelling species. A naturalistic setup with moist substrate (like a mixture of soil and sand) works well, or a Y-tong/plaster nest with narrow chambers scaled to their tiny size ^[2].
• Behavior: These are tiny, docile ants that are not aggressive. They belong to the tribe Crematogastrini, which uses a smear defense mechanism, they have a flattened stinger that wipes venom onto enemies rather than piercing flesh. They are slow-moving and spend most of their time in the nest or foraging quietly through the substrate. Because of their very small size, escape prevention is critical, they can squeeze through the tiniest gaps. They are likely primarily predatory or omnivorous, foraging for small prey in the soil ^[2].
• Common Issues: escape prevention is critical due to their tiny 3mm size, use fine mesh and tight-fitting lids, high humidity needs can lead to mold if ventilation is poor, slow growth may cause beginners to overfeed or give up, wild-caught colonies may have parasites that are difficult to detect, small size means prey must be appropriately sized, fruit flies and pinhead crickets work well

Housing and Nest Setup

Because Myrmecina tridentata is a soil-dwelling species from humid Borneo, they need a setup that maintains consistent moisture. A naturalistic setup with a soil/sand mixture works well, use a container with drainage if you go naturalistic, or a Y-tong/plaster nest designed for small species. The chambers should be tight and narrow since these ants are only about 3mm long. Provide a water tube or moist cotton as a water source. Because they are so tiny, escape prevention must be excellent, use fine mesh on any ventilation holes and ensure all lids fit tightly. A small outworld connected to the nest allows for feeding without disturbing the colony. ^[2][1]

Feeding and Diet

Myrmecina tridentata is likely an omnivorous predator like most Myrmecina species. Offer small live prey such as fruit flies, pinhead crickets, small mealworms, or other appropriately sized insects. They will likely accept sugar sources like honey water or sugar water, though protein-rich foods should form the bulk of their diet. Feed small amounts 2-3 times per week, removing any uneaten prey after 24 hours to prevent mold. Because of their tiny size, prey items should be no larger than their head width. ^[2]

Temperature and Humidity

Being from tropical Borneo, these ants need warm and humid conditions. Keep temperatures in the range of 24-28°C. A heating cable placed on one side of the nest creates a temperature gradient allowing the ants to self-regulate. Humidity should be high, the nest substrate should feel consistently damp but never waterlogged. If using a test tube setup, keep the water reservoir moderate-sized to prevent flooding. Mist the nest occasionally if it appears to be drying out, but ensure good ventilation to prevent mold buildup. ^[2]

Colony Development

This is a newly described species with limited documented biology. Based on typical Myrmecina patterns, the queen likely seals herself in a claustral chamber and raises the first brood alone without foraging. The first workers (nanitics) will be smaller than normal workers. Expect development from egg to first worker to take approximately 6-10 weeks at optimal temperatures. Colony growth will likely be slow initially, with colony size probably remaining under 100 workers even in mature colonies. Be patient with these ants, they are not fast growers. ^[1]

Frequently Asked Questions

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References