Lasius emarginatus
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Description
Lasius emarginatus (Rock Ant)
Are you looking for your first ant colony, but want something more than the classic black garden ant? Or perhaps you are an experienced keeper seeking a species that is rare in Central Europe yet hassle-free to maintain? Lasius emarginatus, known as the Rock Ant, is a fascinating, two-colored ant that combines legendary resilience with exceptionally dynamic behavior in the outworld.
By purchasing this species in our ant store, you get a perfect representative of beginner-friendly ants. It visually resembles exotic species while retaining the complete ease of care characteristic of the Lasius genus.
Why is Lasius emarginatus an Exceptional Choice?
- Beautiful Two-Tone Coloration: The greatest visual asset of this species. The contrasting reddish or orange-brown thorax stands out brilliantly against the dark head and gaster. A fantastic visual upgrade for your formicarium.
- Guaranteed Outworld Action: The Rock Ant possesses the best eyesight in the Lasius genus. Combined with high speed and lack of shyness, this translates into lightning-fast worker recruitment to food and spectacular foraging.
- Legendary "ManhattAnt" Resilience: This species gained worldwide fame when it colonized the upper floors of New York skyscrapers. If it managed in such a demanding, artificial urban environment, it will certainly forgive minor beginner mistakes.
- Dynamic Colony Growth: With proper feeding and nest heating, colony development proceeds smoothly, bringing great satisfaction from observing a growing population.
- Rare Specimen in Collections: In Central Europe, it is much rarer than the common black garden ant, making it a unique addition to any collection.
| Feature | Description |
|---|---|
| Latin Name | Lasius emarginatus (Olivier, 1792) |
| Common Name | Rock Ant |
| Difficulty Level | Easy / For beginners |
| Colony Type | Monogyne (single queen per colony) |
| Queen Size | 7 – 10 mm |
| Worker Size | 2.5 – 5.5 mm |
| Temperature (Nest) | 21 – 27°C (70 – 81°F) (heating accelerates brood development) |
| Temperature (Outworld) | 18 – 28°C (64 – 82°F) (room temperature is sufficient) |
| Humidity (Nest) | 50 – 70% (moderate, prevents over-watering) |
| Humidity (Outworld) | 30 – 50% (low) |
| Hibernation | Required (approx. 3-4 months at 5–10°C (41–50°F)) |
| Food (Carbohydrates) | Honey water or sugar water |
| Food (Protein) | Feeder insects (e.g. crickets, mealworms, fruit flies) |
| Recommended Formicarium | Versatile (Acrylic, Plaster, Ytong, 3D Printed, Soil) |
Care Guide: How to Maintain Your Colony Step-by-Step
Basic Diet and Feeding
A proper diet for the ant colony rests on two pillars:
- Carbohydrates (Energy): Regularly offer small drops of honey water or sugar water.
- Protein (Development): Insect protein is essential for queen egg-laying and larval growth. Feed fresh, tested feeder insects (e.g. crickets, mealworms).
Humidity and Temperature
Maintaining nest humidity at 50-70% provides optimal conditions for brood while preventing mold growth. Heating the nest with a heat mat or cable to 21–27°C (70–81°F) significantly shortens development time from egg to adult worker (typically approx. 30–45 days).
Hibernation (Wintering)
As a European species, Lasius emarginatus requires annual winter rest lasting 3 to 4 months (preferably November to March) at 5–10°C (41–50°F).
Important note: During low-temperature hibernation, only the queen, workers, and larvae survive. Eggs and pupae naturally perish – this is a completely normal biological process.
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