Myrmica rubra Red Fire Ants UK – European Fire Ant Colony with Queen and Workers
Read the full Care Guide for your ants.
Myrmica rubra, also known as European Fire Ants or Red Ants in the UK, is one of the most exciting native ant species you can keep at home. These active reddish-brown ants are famous for their bold colony behaviour, fast response to movement, and unmistakable “boss walk” that makes them stand out from many other British ants.
Why keep Myrmica rubra?
- Native UK red ant species
- Fascinating to watch and highly active
- Excellent educational pet for home study and observation
- Great for ant keepers who want a species with more character
- Strong queen-led colony growth when kept correctly
Queen Ant Size and Identification
Myrmica rubra can have two queen forms:
- Standard queen: around 7–8 mm
- Microqueen: around 5–6 mm, similar in size to workers
The easiest way to identify a queen is by her much larger and more muscular thorax compared with the workers.
Ant Farm Requirements
For the best colony development, your setup should meet these conditions:
Humidity:
- Outworld: ~50%
- Nest: 70-80%
Temperature:
- Outworld: 18–28°C
- Nest: 22–26°C
Recommended Ant Farms:
Suitable ant farms for Myrmica rubra include:
For advanced temperature and humidity monitoring:
For a full starter setup with fire ants included:
Fire Ants Ant Farm Kit – Ferdy
Nesting Habits
In the wild, Myrmica rubra prefers humid nesting areas such as meadows, grassy landscapes, mossy ground and rotten wood. This is why stable nest humidity is so important in captivity. A properly humid nest helps the colony settle faster, forage better and grow with confidence.
Feeding Your Myrmica rubra Colony
Myrmica rubra are active hunters and enjoy both protein-rich food and sugary foods.
You can feed:
- Small boiled insects
- Protein-rich ant foods
- Sweet foods for energy
For a clean and easy feeding routine, use:
For carbohydrates and fast colony energy, also provide:
Protein Jelly gives your queen and workers a practical protein source without the mess of constant live feeding, while Ant Nectar supports daily energy, healthy foraging and stronger colony growth.
FAQs – Myrmica rubra Care
Does Myrmica rubra sting?
Yes. Myrmica rubra can sting. The sting is usually described as a sharp burning sensation similar to a stinging nettle. It can cause redness, swelling and itchiness for a few days.
Are red ants found in the UK?
Yes. Myrmica rubra is native to the UK and is commonly known as the European Fire Ant or Red Ant in the UK.
Are Myrmica rubra good for beginners?
Yes, if kept correctly. They are easy to keep, active and very interesting to observe, but you must remember that they sting and need proper humidity and temperature.
What is the best food for Myrmica rubra?
A balanced diet includes protein-rich food and carbohydrates. Protein Jelly and Ant Nectar are an easy and reliable feeding combination.
What is the ideal nest for Myrmica rubra?
A properly humid ant farm with stable nesting conditions is best. Small starter nests work well, while monitored nests like the A7 Plus and A6 with Meter give you better environmental control.
What happens if you get stung?
You will usually feel:
- A sharp burning pain
- Redness and swelling
- Itchiness for 2–3 hours
- Sometimes, a small raised bump
How do you identify Myrmica rubra?
Workers are usually 4–6 mm long and reddish-brown. They have a two-part waist, visible thoracic spines, elbowed antennae and very defensive behaviour when disturbed.
Important note: Cheap ant farms are often made only for observing worker ants, not for keeping a living colony with a queen. Poor nests usually have weak humidity control and expose the queen to too much light, which causes stress and poor colony development.
Read this guide before you waste time, money, or end up with the disappointment of a confused child looking at an empty ant farm: Fire Ants – The Fascinating World of Myrmica rubra.
Also, read before buying the wrong setup: Ant Farm Kits – Everything You Need to Know Before Making a Purchase.