Dolichoderus lujae

Quick Summary

• Difficulty: Medium
• Origin & Habitat: Amazon basin in Brazil and Colombia. Found in Bosque de Tierra Firme (upland forest) environments, indicating preference for stable, humid forest floor conditions rather than seasonally flooded areas ^[1].
• Colony Type: Colony structure is unconfirmed for this specific species.
• Size & Growth:
  • Queen: Size data unavailable, no specific measurements exist for this species
  • Worker: Size data unavailable, no specific measurements exist for this species
  • Colony: Unknown for this species, no colony size data is available
  • Growth: Unknown
  • Development: Unknown, no species-specific development data is available (Development timeline has not been studied for this species)
• Antkeeping:
  • Temperature: Keep at 24-28°C. This is a tropical species from the Amazon, so warmth is essential for colony health and brood development. A heating cable on one side of the nest creates a temperature gradient allowing workers to self-regulate.
  • Humidity: High humidity is critical, aim for 70-80% relative humidity. These ants come from constantly humid rainforest environments. Keep the nest substrate consistently moist but not waterlogged. Mist occasionally and ensure water is always available.
  • Diapause: No, this is a tropical species that does not experience cold winters. Maintain warm conditions year-round.
  • Nesting: In nature they likely nest in rotting wood, under bark, or in soil pockets in the forest floor. In captivity, a naturalistic setup with moist substrate (soil/peat mix) or a Y-tong/plaster nest works well. Provide damp conditions and avoid dry environments.
• Behavior: Generally less aggressive than some other Dolichoderus species, but will spray formic acid if threatened. Workers are active foragers, both on the ground and likely in lower vegetation. They tend to be moderately fast-moving and will readily explore their outworld for food. Escape prevention should be moderate, they are not tiny ants but can squeeze through small gaps if motivated. Close-fitting lids and standard barrier methods are usually sufficient.
• Common Issues: high humidity requirements make mold a constant threat, ensure adequate ventilation while maintaining moisture, tropical species will decline if temperatures drop below 22°C for extended periods, limited availability in the antkeeping hobby means established colonies are rare, wild-caught colonies may carry parasites or pathogens that can devastate captive colonies, formic acid spray can irritate skin and damage equipment, handle gently and avoid disturbing the nest

Housing and Nest Setup

Dolichoderus lujae requires a humid, warm environment that mimics Amazonian conditions. A naturalistic setup with a soil/peat substrate mixture works well, keep it consistently moist but never waterlogged. You can also use a Y-tong nest with a water reservoir, which makes humidity control easier. Place the nest in a warm area (24-28°C) and consider using a heating cable on one side if your room temperature runs cool. The outworld should be simple, a foraging area where you can offer food. Standard escape prevention with fluon on container edges is sufficient for this medium-sized species.

Feeding and Diet

Like most Dolichoderus species, D. lujae likely has an omnivorous diet. They probably feed on honeydew from aphids and scale insects in the wild, plus small insects and other protein sources. In captivity, offer sugar water or honey as a constant energy source. For protein, provide small insects like fruit flies, small crickets, or mealworm pieces. Feed protein 2-3 times per week and keep sugar sources available at all times. Remove uneaten food promptly to prevent mold in the humid environment.

Temperature and Seasonal Care

This is a strict tropical species, year-round warmth is essential. Keep temperatures between 24-28°C consistently. Unlike temperate species, they do not require hibernation or cooling periods. If temperatures drop below 22°C for extended periods, colonies will become sluggish and brood development may halt or fail. Monitor with a thermometer and be prepared to use heating equipment. The stable warmth of the Amazon rainforest should be your model, avoid drafts, air conditioning, and any cooling.

Behavior and Defense

Dolichoderus ants lack a stinger but possess a potent chemical defense: they can spray formic acid when threatened or disturbed. This spray can irritate skin and eyes, and can damage certain materials. When working with this species, move slowly and avoid poking into the nest. If you need to relocate or inspect the colony, do so gently. The formic acid spray is their primary defense, they are not particularly aggressive but will use this chemical weapon if they feel threatened. This is normal behavior and not a sign of an aggressive colony.

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