Myrmecia
Myrmecia sanguinea
Nuptial Flight Calendar
Care Guide
Myrmecia sanguinea, commonly known as the red bull ant, is one of the most visually striking and formidable species in the ant world. These ants display a powerful, elongated body with large mandibles and a potent sting, making them both impressive to observe and challenging to keep. The queen is the largest individual in the colony, measuring between 18 and 24 mm in length, while workers range from 12 to 20 mm. Unlike many species, Myrmecia ants are strong, solitary hunters with excellent vision, often seen individually stalking prey rather than forming long foraging trails.
One of the most distinctive features of Myrmecia sanguinea is their semi-claustral founding method. The queen must leave the nest to hunt for insects during the early stages of colony development, bringing back protein to feed her first brood. This means she cannot rely solely on stored reserves, making the founding phase particularly delicate. Once established, the colony’s diet consists primarily of live or freshly killed insects such as crickets, cockroaches, and flies, supplemented with a small amount of sugar water or honey water for energy. Protein is the cornerstone of their nutrition, and without a steady supply, the colony will not thrive.
Care difficulty
Keeping Myrmecia sanguinea is suitable only for experienced ant keepers. Their advanced care level stems from their semi-claustral founding, aggressive temperament, and specific environmental requirements. The queen’s need to hunt during founding makes the process highly sensitive to disturbance. Additionally, workers are fast, unpredictable, and possess a painful sting, so secure, escape-proof enclosures are essential. A calm, confident keeper who understands ant behavior will find them rewarding, but beginners should start with an easier species.
Housing
Providing the right environment for Myrmecia sanguinea requires a formicarium with good ventilation and a dry nesting area, as these ants prefer moderate humidity between 50 and 70%. The nest should be kept at temperatures between 20 and 26°C, with a warmer spot during the active season. A large foraging arena is necessary to allow the queen and workers to hunt and explore. Because Myrmecia are diurnal and highly active, they benefit from natural light cycles. A deep substrate or soil-based nest works well, as these ants dig complex chamber systems. During winter, a hibernation period at 14°C is essential for their annual cycle; skip this at your own risk.
First days after purchase
After receiving your Myrmecia sanguinea colony, give them absolute peace and quiet for at least a week. Place the formicarium in a dimly lit, vibration-free location. During semi-claustral founding, the queen will need access to small, live insects — such as flightless fruit flies or pinhead crickets — right from the start. Offer these gently, without opening the nest. Monitor the queen’s hunting behavior and ensure she is feeding. Avoid handling or direct light exposure. Patience is key: the colony will settle once the first nanitics emerge and begin sharing the hunting duties.