Myrmecia
Myrmecia regularis
Nuptial Flight Calendar
Care Guide
Myrmecia regularis, commonly known as the Australian bull ant, is a species that commands both respect and admiration. These ants are prime examples of primitive, visually oriented hunters, equipped with enormous compound eyes and a powerful, venomous sting that makes them formidable predators. Unlike many other ant species, Myrmecia regularis lacks the typical pheromone-based trail system; instead, they rely on their exceptional vision to hunt and navigate. The queen, an impressive figure measuring 18–22 mm, initiates the colony through semi-claustral founding, meaning she must leave the nest to forage for her first brood. Workers range from 12–18 mm and are uniform in size, with a robust, agile build built for capturing live prey. A mature colony can number between 300 and 1,500 individuals, a moderate size that still allows for spectacular hunting displays.
The diet of Myrmecia regularis is heavily protein-based. These ants are pure carnivores and require a steady supply of live or freshly killed insects—crickets, roaches, mealworms, and flies are ideal. While they will accept sugar water as an energy source, their nutritional needs are best met through insect prey. Offering sugar water in small amounts can support the colony, but it must never replace regular protein feedings. Unlike seed-eating species, these ants cannot subsist on carbohydrates alone.
Care difficulty
Keeping Myrmecia regularis is an advanced undertaking and is not recommended for beginners. Their semi-claustral founding means the queen must be fed during the early stages, which requires careful observation and regular feeding without causing undue stress. The workers are highly aggressive, fast-moving, and possess a potent sting that can cause pain and swelling in humans. Escape prevention is paramount—these ants are excellent climbers and will easily scale smooth walls if not properly contained. Their need for a consistent hibernation period at 14°C further adds to the complexity, demanding precise temperature control.
Housing
A suitable formicarium for Myrmecia regularis should include a secure foraging arena with high walls or a tight lid. The nest itself should allow for controlled humidity between 50–70% and a temperature gradient between 20–26°C. These ants prefer a dry nest with a moistened section for brood development; over-wetting can lead to mold and stress. Because of their powerful mandibles and sting, use non-breakable materials for the nest and arena. Provide a deep layer of substrate or a naturalistic setup with sand and clay for tunneling, as they appreciate the ability to excavate. A heating cable placed on one side of the nest allows the colony to thermoregulate.
First days after purchase
Upon arrival, transfer your Myrmecia regularis colony to a quiet, dark location and allow them to settle for at least 24 hours. Avoid any vibrations or sudden movements near the setup. For a founding queen, offer a small, pre-killed insect (such as a fruit fly or small cricket) and a drop of sugar water on a cotton ball. Check after a day to see if the prey was consumed. Do not disturb the nest during the first week—simply ensure the queen has access to food and water. Once the first workers eclose, begin offering slightly larger prey and observe their bold hunting behavior from a safe distance. Patience and a calm approach are essential with this species; their intelligence and reactivity make them a deeply rewarding challenge for the experienced keeper.