Lasius emarginatus is a common yet fascinating ant species native to much of Europe and parts of western Asia. Known for its reddish body coloration and adaptability, this species is ideal for both beginners and experienced ant keepers. It is slightly more heat-tolerant than Lasius niger and is often found nesting in warm, dry locations like walls, pavement cracks, and dry soil banks. The colony grows at a moderate pace and can eventually house several thousand workers.
Lasius emarginatus
In nature, Lasius emarginatus builds its nests in sun-exposed soil, under stones, in dead wood, or even inside brick walls and pavements in urban settings. They are monogynous, with a single queen leading the colony. Workers show a clear bicolored appearance: a reddish thorax and dark brown or black head and gaster.
Their foraging behavior is aggressive and efficient, and they quickly discover food sources. Colonies can reach sizes of 5,000 to 10,000 workers over time and are known for tight territorial defense when disturbed.
