Formica cunicularia

Formica cunicularia is a striking species within the Formica family.
Predominantly found throughout Europe and parts of Africa and Asia, they are a frequent target for parasitic species. Their nests, characterised by small earthen mounds, are typically located in sparse woodlands or open areas, favouring sunny locations. Commonly known as tunnel ants, they utilise heat and a network of narrow tunnels to manage brood development down to the water table for essential moisture and nourishment. Predation by species such as Formica Sanguinea and Rufa has led them to develop notably aggressive behaviour in their natural habitat. They actively hunt both live and dead prey. Additionally, Formica cunicularia nurtures and cultivates aphids to harvest their sweet honeydew.
Queen Size - 9mm to 10mm. Lifespan - around 10 years.
Fully Claustral - No food is necessary until the first workers, though a drop of Protein jelly once a week is recommended.
Colony Size - 3000 to 5000.
Worker Size - 4mm to 7mm. Polymorphic ants. Minor Worker - 4mm to 5.5mm / Major Worker - 6mm to 7mm
Temperature: Nest 22 to 25 °C / Outworld 22 to 28 °C ;
Humidity: Nest 60% to 70% | Outworld 40% to 60%
Hibernation - Yes, from October to March at 8 to 12 °C
 
They will bite if threatened although rarely. They spray formic acid therefore a natural ant farm is recommended!