Formica rufibarbis is a beautiful and increasingly rare ant species found across many parts of Europe. In several regions it is considered threatened due to habitat loss. The species is recognizable by its dark brown to black body combined with orange to reddish tones on parts of the head and thorax. Queens measure around 10 to 12 mm while workers are typically 5 to 8 mm long.
Colonies are polygynous, meaning several queens may live together in the same colony. In nature, colonies usually grow to a few thousand workers. Despite its rarity in the wild, this species is generally easy to keep and adapts well to captive conditions when not disturbed too often.
Formica rufibarbis
In the wild, Formica rufibarbis prefers open and warm habitats such as grasslands, forest edges, and sandy or rocky soils. They often build nests in soil, sometimes under stones or within loose ground where the sun can warm the nest. Colonies can contain multiple queens and several thousand workers. Workers are active foragers and quickly recruit nestmates when food sources are found. Like other Formica species they rely heavily on sugars for energy and insects for protein. When threatened they may bite and spray formic acid as a defense.
