Strumigenys bernardi

Quick Summary

• Difficulty: Hard
• Origin & Habitat: Afrotropical forests of Central and West Africa (Angola, Cameroon, DRC, Equatorial Guinea, Gabon, Togo, Uganda). Found in leaf litter at elevations from 110m to 640m in Gabonese forests ^[3][4][1].
• Colony Type: Unconfirmed – no documentation available on colony type.
• Size & Growth:
  • Queen: Unknown – queens have not been described in the available literature.
  • Worker: 1.7-2.1mm total length ^[1]
  • Colony: Unknown – no specific data. Typical Strumigenys colonies are small, but this is an estimate only.
  • Growth: Likely slow – inferred from the small colony sizes typical of the genus.
  • Development: Estimated 8-12 weeks based on typical Strumigenys development patterns (no direct study for this species). (Development time is estimated. Colony growth is expected to be slow.)
• Antkeeping:
  • Temperature: Tropical, aim for 24-26°C. Avoid temperatures below 20°C. These are forest-floor ants from warm climates, but no specific temperature data exists. Use condition-based guidance.
  • Humidity: Keep the nest substrate consistently moist but not waterlogged. These are leaf-litter ants from humid forests, high ambient humidity (70-85%) is beneficial.
  • Diapause: No – this is a tropical species that does not require hibernation. Maintain warm conditions year-round.
  • Nesting: Use a naturalistic setup with moist substrate and leaf litter. Y-tong (AAC), plaster, or soil nests work well, provided they retain moisture. Avoid acrylic nests. Escape prevention is critical due to their tiny size.
• Behavior: Shy, non-aggressive ants with a functional sting (not medically significant to humans). They are specialized ambush predators of tiny arthropods like springtails. Workers forage slowly and methodically in the leaf litter. Their small size makes escape prevention very challenging.
• Common Issues: tiny size makes escape prevention challenging – use fine mesh and tight-fitting lids., slow or unknown growth rate may lead to frustration for keepers expecting rapid colony development., specialized diet – they require live micro-prey such as springtails, standard ant foods are usually refused., high humidity requirements can lead to mold if ventilation is poor., wild-caught colonies may have unknown health issues or parasites that cause colony failure.

Housing and Nest Setup

Strumigenys bernardi requires a setup that mimics its natural leaf-litter habitat. Use a naturalistic terrarium-style formicarium with a layer of moist forest floor substrate (a mix of soil, sand, and decaying leaves). Y-tong (AAC) or plaster nests also work well if they retain moisture. The outworld should have a layer of leaf litter so the ants can forage naturally. Because these ants are tiny (under 2.1mm), escape prevention is critical – use fine mesh on all ventilation holes and ensure tight lid seals. A small water reservoir connected to the nest helps maintain humidity without flooding. Avoid acrylic nests. ^[1]

Feeding and Diet

Strumigenys bernardi is a specialized predator that requires live micro-prey. Their primary food source should be springtails (Collembola), which you can culture separately or buy. They will also accept other tiny arthropods such as woodlice (isopods), minute mites, and small fly larvae. Unlike many ants, they are not attracted to sugar sources or honey. Feed small prey items every 2-3 days, adjusting based on colony size and consumption. Remove uneaten prey after 24 hours to prevent mold. A well-fed colony will actively patrol the leaf litter searching for prey.

Temperature and Humidity

These are tropical forest ants that need warm, stable conditions. Keep the colony at 24-26°C year-round. Avoid temperatures below 20°C. A heating mat on one side of the enclosure can create a temperature gradient, but make sure the nest area stays within the ideal range. Humidity should be high – keep the substrate consistently damp but not waterlogged. Mist the enclosure occasionally and use a water reservoir in the nest to maintain moisture. Good ventilation is important to prevent mold, but avoid excessive airflow that dries out the habitat.

Behavior and Temperament

These ants are shy and non-aggressive. They are specialized ambush predators that use their long, slender mandibles to capture tiny prey in leaf litter. Workers forage slowly and methodically, often staying hidden in the substrate. They have a functional sting but it is not dangerous to humans. The main challenge is their tiny size – they are excellent escape artists, so use fine mesh barriers. Colonies are small and grow slowly, so do not expect rapid expansion. Watching workers carry prey back to the nest is a good sign of a healthy colony. ^[1]

Colony Establishment

Establishing a colony from a wild-caught queen is challenging because founding behavior has not been documented for this species. If you acquire a founding queen, provide a small test tube setup with moist cotton and keep it undisturbed at 24-26°C. First workers (nanitics) will be very small. Alternatively, you may find a colony in leaf litter samples – transfer the entire substrate to a naturalistic setup. Be very gentle as these tiny ants are easily damaged.

Growth and Development

Colony growth is expected to be slow. Based on typical Strumigenys development, egg to worker likely takes 8-12 weeks at optimal temperature. Colonies probably remain small (under 500 workers is a rough estimate, but no data exists). The key to success is consistent feeding with appropriate live prey. Be patient – these ants can live for several years once established.

Frequently Asked Questions

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References