Tetramorium kestrum

Quick Summary

• Difficulty: Medium
• Origin & Habitat: Rainforests of East and Central Africa: Uganda, Kenya, Angola, Democratic Republic of Congo, Sudan. Ground-dwelling, preferring the damp, shaded conditions of tropical forest floors ^[1][2].
• Colony Type: Colony structure is not documented. Based on general Tetramorium patterns, single-queen colonies are typical, but this is unconfirmed.
• Size & Growth:
  • Queen: Size data unavailable
  • Worker: 3.0-3.1mm ^[1]
  • Colony: Unknown
  • Growth: Unknown
  • Development: Unstudied in this species, based on tropical Tetramorium, likely 6-10 weeks at 24-28°C (Direct observations unavailable)
• Antkeeping:
  • Temperature: Keep warm (24-28°C) year-round as a tropical rainforest species. Avoid drops below 22°C. A slight gradient is beneficial.
  • Humidity: High humidity is essential. Keep the nest substrate consistently moist but not waterlogged. Aim for conditions that feel damp to the touch, mimicking the forest floor.
  • Diapause: No diapause required. Maintain consistent warm conditions year-round.
  • Nesting: Ground-nesting. Y-tong (AAC) or plaster nests with moisture work well. Also use deep, moist soil with flat stones. High humidity nests are needed.
• Behavior: Workers are active foragers, not aggressive toward keepers, but will defend the nest. Their small size (3mm) makes escape prevention critical, use fine mesh barriers. They use a smear defense: a flattened stinger wipes venom on enemies rather than piercing.
• Common Issues: escape prevention is critical due to tiny 3mm size, seal all gaps, high humidity can cause mold if ventilation is poor, tropical species stress if temperatures stay below 22°C, wild-caught colonies may carry parasites, quarantine before introduction, founding behavior unconfirmed, if claustral, queen should remain undisturbed

Housing and Nest Setup

You'll want to replicate the humid forest floor conditions. Y-tong (AAC) nests work well because they hold humidity and allow ventilation. Plaster nests with water reservoirs are another good option for controlling moisture. For a naturalistic setup, use a deep soil layer (at least 5cm) kept consistently moist, with flat stones or bark on top for cover. The outworld should be simple, a shallow foraging area reduces travel distance. Use a fluon barrier on the rim, these tiny ants can slip through small gaps ^[1].

Feeding and Diet

Generalist foragers: in captivity, offer small live prey like fruit flies, pinhead crickets, and mealworms. Provide sugar water, honey, or diluted maple syrup as carbohydrates. Feed small portions 2-3 times per week, remove uneaten prey after 24 hours. For a small colony, a single fruit fly or a drop of sugar water is enough. Always provide fresh water via a tube with cotton plug or moist substrate.

Temperature and Seasonal Care

As a tropical species, Tetramorium kestrum needs warm conditions year-round. Maintain 24-28°C in the nest area, with a cooler spot (about 24°C) so workers can choose. Use a heating cable on one side. Avoid temperatures below 22°C for long periods, it slows brood development. No winter diapause is needed, keep temperatures consistent. If your room temperature falls within this range, no extra heating may be needed, but monitor with a thermometer.

Humidity Management

High humidity is critical. These rainforest floor ants need 70-85% relative humidity in the nest. The substrate should feel moist but not have standing water. In Y-tong nests, keep the water chamber filled, some condensation is normal. In plaster nests, rehydrate when the surface starts to dry. Use a hygrometer to monitor. Too little humidity kills brood and workers, too much leads to mold, balance by ensuring good ventilation.

Colony Establishment and Growth

Founding behavior is unconfirmed for this species. If claustral (common in Tetramorium), the queen will seal herself in a test tube setup with a small water reservoir and raise the first brood without feeding. Do not disturb her during this period, it may last weeks. Once nanitic workers appear, offer tiny food. Colony growth rate is unknown, based on related species, it is likely moderate but patience is needed. Wild-caught queens may carry parasites, quarantine new acquisitions.

Frequently Asked Questions

Report an Issue

The current care sheet is based fully on literature. See inconsistencies, or something that's incorrect? Please report here, it will be resolved after review from an admin. Contributing to the blogs tab also helps providing information, to make us be able to further improve the caresheets. Thank you for your support!

References