Discothyrea
Discothyrea testacea
Care Guide
Discothyrea testacea is a true gem for the dedicated myrmecologist — a species that rewards patience and precision. These diminutive ants are specialists in the truest sense. The queen, measuring just 2–3 mm, and her workers, only 1.5–2.5 mm, are among the smallest of all kept ants. What they lack in size, they make up for in fascinating biology. Discothyrea are known as “egg thieves” or “centipede egg predators”: their slender, forward-curved mandibles and powerful sting are perfectly adapted to piercing and extracting the contents of arthropod eggs, particularly those of small centipedes and other soil invertebrates. Their colonies remain tiny, typically numbering only 10 to 30 workers, and growth is extremely slow — a colony may take years to reach its full size. This is not a species for instant gratification, but for the keeper who delights in observing subtle, specialized behaviors.
Care difficulty
Keeping Discothyrea testacea is considered advanced, and for good reason. The semi-claustral founding phase is particularly challenging: the queen must hunt and feed herself and her first brood without any workers to assist, all while maintaining the extreme humidity these ants require. She will need a steady supply of appropriately small prey items — freshly killed fruit flies, pinhead crickets, or, ideally, small arthropod eggs. Even after workers appear, the colony’s tiny size and sensitivity to disturbance mean that any misstep in humidity, temperature, or food quality can set them back dramatically. Only experienced keepers with a stable setup and a willingness to observe rather than intervene should attempt this species.
Housing
A formicarium for Discothyrea must prioritize humidity. Levels between 70 and 90% are non-negotiable, especially in the nest chamber where larvae develop. A small, dark, well-sealed nest with a moist substrate — such as a gypsum or clay base with a built-in water reservoir — works best. The foraging arena should be similarly humid but secure; these ants are poor climbers and slow-moving, so a simple escape-proof container with a low side of Fluon or talc is sufficient. Temperature can range from 22 to 28°C, but stability is more important than extremes. No hibernation is needed, so year-round warmth is essential. Keep the nest area in absolute darkness and minimize vibrations — Discothyrea are extremely shy and will stop foraging or even abandon brood if stressed.
First days after purchase
Upon receiving your Discothyrea testacea colony, resist the urge to inspect them closely. Place the formicarium in a quiet, dimly lit spot and let the ants settle for at least 24 hours. Check that the nest substrate is moist but not waterlogged. Offer a single small prey item (e.g., a crushed fruit fly) near the nest entrance and observe from a distance. Do not disturb the queen or attempt to feed her by force. Over the following days, monitor humidity levels daily and only open the setup for essential maintenance. Patience is the key — these ants will acclimate gradually, and their first signs of foraging or brood care will be a small but deeply rewarding milestone.
