How difficult is Myrmica sulcinodis to keep?

Myrmica sulcinodis is rated intermediate difficulty. The queen is semi-claustral and needs small prey items during founding.

Does Myrmica sulcinodis need hibernation?

Yes. Myrmica sulcinodis requires a winter hibernation period at around 4 °C. This mimics natural diapause and is essential for long-term colony health.

What temperature does Myrmica sulcinodis need?

Myrmica sulcinodis thrives at 16–22 °C with 55–75% humidity.

When does Myrmica sulcinodis have its nuptial flight?

Myrmica sulcinodis nuptial flights occur in: Northern Europe: July, August, September.

1 / 10

Myrmica

Myrmica sulcinodis

Intermediatesemi-claustralHibernatesinsectssugar waterprotein

Temperature

16–22°C

Humidity

55–75%

Colony size

500–3k

Queen size

5.5–7 mm

Worker size

4–5.5 mm

Hibernation

4°C

Nuptial Flight Calendar

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Northern Europe

Care Guide

Myrmica sulcinodis is a fascinating temperate species that brings a touch of wild European heathland into the formicarium. Unlike the seed-storing granivores or the fungus gardeners, these ants are active hunters with a pronounced sting, making them a rewarding challenge for the intermediate keeper. The queen, smaller and more delicate than many larger species at just 5.5 to 7 mm, raises her first generation entirely on her own reserves — a true test of patience during the semi-claustral founding phase. Workers range from 4 to 5.5 mm and, while not strongly polymorphic, are robust and fast-moving, readily tackling live prey much larger than themselves. A mature colony can grow to between five hundred and three thousand individuals, forming a bustling, energetic society that is a joy to observe.

Care difficulty

Keeping Myrmica sulcinodis is best suited to ant keepers who have already navigated the basics and are ready for a species with specific seasonal needs. The semi-claustral founding means the queen requires regular feeding during the early stages — small insects like fruit flies or pinhead crickets must be offered, and sugar water or honey provides the carbohydrates she and later the workers need. This is not a set-and-forget species; attention to feeding schedules and hibernation timing is essential. The main challenge lies in replicating their natural cold period: without a proper winter diapause at around 4°C, the colony will fail to thrive and the queen will stop laying eggs.

Housing

A formicarium for Myrmica sulcinodis should offer moderate humidity and cool temperatures. Aim for a nest area kept at 55 to 75 percent humidity, with the overall temperature range between 16 and 22°C — warmer than this can stress the colony. These ants appreciate a well-drained substrate or a modular nest with moistened chambers. An outworld with a foraging area is essential, as they are active and need space to hunt. Importantly, Myrmica are sensitive to heat spikes and dry conditions; keep the setup away from direct sunlight and radiators. Hibernation can be managed by slowly cooling the entire formicarium down to 4°C over several weeks in late autumn, maintaining some moisture during this rest period, and then gradually warming them in spring.

First days after purchase

Upon receiving your Myrmica sulcinodis colony, give them immediate access to a quiet, shaded spot. If you have a founding queen or a small group, provide a test tube setup with a water reservoir and a small drop of sugar water. Do not disturb them for at least 48 hours — these ants are nervous during acclimatization. After that, offer a tiny piece of insect protein, such as a freshly killed cricket leg, and observe whether the queen begins to forage. Keep vibrations to a minimum, and resist the urge to check every hour. Once you see the first nanitics (small workers), begin a regular feeding routine of insects and sugar water, and watch your colony grow into a lively, stinging spectacle of temperate ant-keeping.