Myrmecia pilosula
Temperature
18–24 °C
Humidity
50–70%
Colony size
300–1,500
Queen size
12–15 mm
Worker size
8–12 mm
Hibernation temp
12 °C
Diet
Care Guide
Myrmecia pilosula, commonly known as the jumper ant or jack jumper ant, is one of the most iconic and formidable species in the ant world. Native to Australia, these ants are instantly recognizable by their large size, long powerful mandibles, and impressive jumping ability — they can leap several times their body length when disturbed or hunting. Workers range from 8 to 12 mm, while the queen reaches 12 to 15 mm. Unlike many ants, Myrmecia pilosula are solitary hunters, relying on excellent vision and a potent venomous sting to subdue prey. Their colony structure is relatively small for such large ants, typically numbering between 300 and 1,500 workers, but each individual is a formidable predator.
Care difficulty
Keeping Myrmecia pilosula is not for beginners. This species demands an advanced level of experience due to their semi-claustral founding, aggressive temperament, and specific environmental requirements. During the founding phase, the queen must hunt for herself — a process that requires live insect prey and careful monitoring. Workers are highly alert and will aggressively defend their nest, delivering a sting that is painful to humans and can cause severe allergic reactions. A constant supply of live insects is essential, along with protein sources and sugar water. Additionally, these ants require a winter diapause at around 12°C, mimicking their natural seasonal cycle.
Housing
A secure, escape-proof formicarium is non-negotiable. Myrmecia pilosula are active, agile, and capable climbers, so the outworld must be well sealed with a fluon or oil barrier. The nest itself should offer chambers with controlled humidity between 50 and 70% and temperatures of 18 to 24°C. During the founding stage, a test tube setup with a small outworld works well, but as the colony grows, a larger formicarium with a substrate for digging — such as a mix of sand and clay — is recommended, as these ants appreciate the ability to excavate. Provide a heat gradient so the ants can thermoregulate, and ensure the nest area remains dark and undisturbed. Hibernation must be carried out gradually in a cool, dark space at 12°C for about three months. Attempting hibernation too early or with a weak colony can be fatal.
First days after purchase
Upon receiving your Myrmecia pilosula colony, place the container in a quiet, dimly lit area and allow the ants to settle for at least 24 hours. Do not open the container or disturb them unnecessarily. Check that the queen has access to water and a small piece of protein, such as a freshly killed cricket or a drop of honey-water. Observe from a distance — any sudden movements or vibrations can cause stress. Once the ants appear calm, you may carefully transfer them to their new formicarium following the provided instructions. Patience is key; this species takes time to establish and will reward dedicated keepers with a unique window into the life of Australia’s most fascinating predators.