Plagiolepis vanderkelleni

Plagiolepis vanderkelleni

Plagiolepis vanderkelleni is a small ant species recently documented in Rwanda's Akagera National Park, representing a new record for the country ^[1]. Workers are tiny ants, typical of the Plagiolepis genus, which contains some of the smallest ants in the Formicinae subfamily. The genus is known for its cryptic habits and often-colonized nesting preferences. These ants are generally pale to dark brown in color and move quickly in characteristic Plagiolepis fashion. As a recently documented species in East Africa, specific biological details remain poorly studied, but they likely share general traits with other Plagiolepis species.

Quick Summary

• Difficulty: Medium
• Origin & Habitat: Akagera National Park, eastern Rwanda, a tropical savanna ecosystem with warm temperatures and seasonal rainfall ^[1].
• Colony Type: Unconfirmed colony structure. Most Plagiolepis species are monogyne (single queen), though some can form small multi-queen colonies. Further research needed.
  • Colony: Monogyne
  • Founding: Claustral
• Size & Growth:
  • Queen: Estimated 5-6mm based on genus Plagiolepis patterns
  • Worker: Estimated 2-3mm based on genus Plagiolepis patterns
  • Colony: Likely small (under 500 workers) based on typical Plagiolepis colony sizes
  • Growth: Unknown, likely moderate
  • Development: Estimated 6-8 weeks at optimal temperature based on related Formicinae species (Development timeline is estimated from genus-level data since species-specific studies are unavailable)
• Antkeeping:
  • Temperature: Keep at 22-26°C. This range reflects their East African tropical origin. A gentle heat gradient allows ants to regulate their temperature.
  • Humidity: Maintain moderate to high humidity (60-80%). Plagiolepis species typically prefer conditions similar to their natural habitat, damp but not waterlogged substrate.
  • Diapause: Unlikely required. As a tropical species from Rwanda, they likely do not enter true hibernation. However, a slight cool period during winter months may be beneficial.
  • Nesting: Preferred nest types likely include test tubes, Y-tong nests, or plaster nests with small chambers scaled to their tiny size. In nature, they probably nest in soil, under stones, or in decaying wood.
• Behavior: Behavior is not specifically documented for this species. Based on genus patterns, they are likely non-aggressive, quick-moving ants that forage in trails. Escape prevention is critical due to their very small size, they can squeeze through standard barriers easily. They probably accept sugar water and small protein sources.
• Common Issues: escape prevention is critical due to their very small size, use fine mesh and tight-fitting barriers, limited species-specific data means care is based on genus inference rather than direct observation, small colony sizes may make them sensitive to disturbance, humidity control is important, too dry causes desiccation, too wet promotes mold, wild-caught colonies may carry parasites that can devastate small ant populations

New Discovery in Rwanda

Plagiolepis vanderkelleni represents a newly documented ant species for Rwanda, recorded during biodiversity surveys in Akagera National Park ^[1]. This East African national park features a mix of savanna, woodland, and wetland habitats along the Akagera River. The discovery highlights how even relatively well-studied ant genera like Plagiolepis still contain undocumented species in under-sampled regions of Africa. For antkeepers, this means that specific care requirements for P. vanderkelleni have not been directly studied, and much of what we know comes from inference based on related species in the same genus.

Nest Preferences

While specific nesting behavior is unconfirmed for this species, Plagiolepis ants typically prefer small, enclosed spaces. In captivity, test tubes with cotton water reservoirs work well for founding colonies. As the colony grows, small acrylic nests or Y-tong setups with narrow chambers scaled to their tiny worker size are appropriate. The chambers should be proportionally small, these are not large ants that need wide tunnels. Keep the nest substrate lightly moist but not saturated. A small water tube connected to the nest helps maintain humidity without flooding.

Feeding and Diet

Based on typical Plagiolepis feeding behavior, these ants likely accept a varied diet. Offer sugar water or honey as a constant energy source. For protein, small soft-bodied prey like fruit flies, pinhead crickets, or small mealworms work well. Plagiolepis species are generally not large predators, so prey items should be appropriately sized for their tiny workers. Feed protein 2-3 times per week, and keep sugar sources available at all times. Remove uneaten prey within 24-48 hours to prevent mold issues.

Temperature and Care

Maintain temperatures between 22-26°C, reflecting their tropical East African origin. A heating cable on one side of the nest creates a temperature gradient that allows ants to self-regulate. Place the heating on top of the nest, not underneath, to prevent excessive drying. Room temperature within this range is often sufficient. Monitor colony behavior, if workers cluster consistently near the heat source, increase temperature slightly, if they avoid heated areas, reduce heat. Avoid temperatures below 20°C or above 30°C for extended periods.

Behavior and Temperament

Plagiolepis vanderkelleni likely exhibits typical Plagiolepis behavior, these are quick-moving, generally non-aggressive ants that form moderate foraging trails. Workers are small and may be overlooked by larger ant species, which is part of their survival strategy. They are not known for stinging and pose no danger to keepers. The primary concern for antkeepers is their tiny size, which makes them expert escape artists. Standard barrier methods may not contain them, use fine mesh (at least 0.5mm) and ensure all lid seams are sealed. They are best suited for keepers who enjoy observing small, active ant species.

Frequently Asked Questions

References