Lasius grandis

In nature, Lasius grandis nests in dry, warm environments, often in soil, under stones, or within decaying wood in open, sunlit areas. The species is monogynous, with a single queen founding and leading the colony.

Colonies grow steadily and can reach up to 10,000 workers over time. Workers are 5–6 mm in size and slightly larger and shinier than Lasius niger. Queens measure 8–9 mm. The ants are known for their efficient foraging, especially in warm temperatures, and their ability to handle Mediterranean drought conditions better than many related species.

At Esthetic Ants, we are proud to offer healthy, fertile queens of Lasius grandis—a perfect species for both beginners and experts alike. Whether you're just getting started or want to expand your collection, Lasius grandis gives you a classic antkeeping experience with added heat tolerance and larger, more visible workers.

They are ideal for setups in warmer indoor conditions and require little more than sugar water and protein to thrive. Buy your colony now while stocks last and enjoy watching one of Europe’s most underrated ant species grow into a bustling community!

• Founding: Claustral founding—queens do not require feeding during founding phase.

• Growth: Moderate to fast; expect brood within a few weeks and steady worker production through summer months.

• Temperature & humidity:

  • Arena: 20–28°C / Humidity: 30–50%

  • Nest: 21–25°C / Humidity: 50–60%

• Hibernation: Yes — from October to March at 5–8°C.

• Diet: Standard diet of sugar water or honey water for carbs and protein-rich insects (e.g., fruit flies, mealworms, crickets).

• Formicarium: Suited for Ytong, acrylic, plaster, or natural soil setups. Use a medium-sized arena with sand-loam substrate for natural foraging behavior.

• Behavior: Calm and easy to observe. They rarely bite, making them ideal for handling and educational setups.

With their low-maintenance needs, high visibility, and impressive resilience, Lasius grandis is a fantastic species to keep year-round, especially if you want a Lasius-type ant that performs better in warm indoor climates.