Myrmica tulinae - "Tulina's Ant"
Myrmica tulinae is a fascinating ant species belonging to the Myrmicinae subfamily. These ants are generally reddish-brown to blackish-brown in color, with queens often appearing bulkier and somewhat darker than workers. They are known for their distinct propodeal spines (spines on their upper back segment) which are relatively long, acute, and straight. Workers typically have a head that's slightly longer than it is broad, with weakly convex sides. They can be quite similar in appearance to Myrmica sabuleti, making precise identification challenging without examining males as well. This species builds nests in damp, coarse-sandy soil, sometimes forming raised mounds, or under stones in various forested and meadow environments.
- Difficulty: Medium
- Origin & Habitat: Europe, Asia (specifically Turkey, Georgia, France, Italy, Netherlands, Poland, and China) in Moderately humid to wet and boggy places, including damp, coarse-sandy soil in plantations, oak and Ulmus-Fraxinus forests, and under stones in alpine meadows..
- Colony Type: Polygyne (multiple queens), semi-claustral (queen forages) founding.
- Size & Growth:
- Queen: 5.5-8.0mm
- Worker: 4.0-6.0mm
- Colony: Medium (thousands), potentially up to 10,000 workers in some Myrmica species.. Slow initially, accelerating with more workers and queens. growth.
- Antkeeping:
- Temperature: A temperature gradient is beneficial. The thriving range is 18-28°C, with the nest area preferably kept between 20-25°C. Heating one side of the nest allows ants to thermoregulate..
- Humidity: High humidity is crucial for Myrmica tulinae. The nest should maintain 60-90% humidity, with some keepers preferring the wetter side. Adequate moisture-retaining substrates are important..
- Diapause: Required. 4-5 months at 5-10°C.
- Nesting: Myrmica tulinae prefers nesting in damp soil, under rocks, or in wet rotten wood in the wild. In captivity, they do well in natural setups, ytong, or acrylic nests that can retain high humidity. Wooden or dry 3D-printed nests are not recommended..
- Behavior: Medium (towards handler, food or other ants) aggressiveness.
- Common Issues: Dehydration due to insufficient humidity, Colony stalling due to lack of feeding in semi-claustral stage, Mold in nest from poor ventilation or excessive moisture without proper substrate, Queen stress from frequent disturbance during founding, Mites (often introduced via wild-caught food).
Myrmica tulinae queens are semi-claustral, meaning they need to forage for food during the founding stage. It's crucial to offer them small amounts of protein and sugar water frequently. Unlike fully claustral species, they cannot rely solely on their fat reserves. Ensuring a consistent food supply during this critical period will significantly increase the queen's chances of successfully raising her first generation of workers, known as nanitics.
Humidity is paramount for Myrmica tulinae. These ants thrive in damp conditions, mimicking their natural habitat of moderately humid to wet environments. Their nests, whether natural or artificial, must retain high moisture levels. If the nest dries out too quickly, the colony can suffer severe losses, as they are susceptible to dehydration. Regularly checking and maintaining the humidity within their formicarium is not just a recommendation, it's a necessity for their well-being.
Myrmica species, including Myrmica tulinae, are known for their somewhat aggressive nature and ability to sting. While their sting is generally considered mild and not dangerous to humans, it can be painful. When handling the colony or performing maintenance, it's wise to exercise caution to avoid being stung. This characteristic also means they are quite adept at taking down live prey, making them engaging hunters to observe.
Diapause, or hibernation, is an obligatory part of the Myrmica tulinae life cycle. These ants require a cool period, typically from November to March, to remain healthy and ensure the colony's long-term success. During diapause, food consumption will decrease significantly, and the colony will huddle together. Maintaining a cool, stable temperature (around 5-10°C) during this time is vital for a successful hibernation and subsequent active season.
Colonies of Myrmica tulinae, like other Myrmica species, are often polygynous, meaning they can have multiple queens. This characteristic can contribute to faster colony growth compared to monogyne species. However, not all queens in a polygynous colony may be actively laying eggs; some might even behave more like workers. If you acquire a colony with multiple queens, observe their behavior to understand the colony's reproductive dynamics.
Frequently Asked Questions
What kind of enclosure is best for Myrmica tulinae?
For Myrmica tulinae, you'll want a formicarium that excels at retaining high humidity, such as ytong (aerated concrete), natural soil setups, or certain acrylic nests with good hydration systems. Avoid dry setups like plain 3D-printed nests or untreated wood, as these ants need consistent moisture to thrive. Make sure there’s a good moisture gradient so they can choose their preferred spot.
How often should I feed my Myrmica tulinae colony?
Since Myrmica tulinae queens are semi-claustral and the workers have a relatively small social stomach, frequent small feedings are best. During the founding stage, feed your queen every 2-3 days, or at least once a week, with both sugar water and a small protein source. Once the colony has workers, aim for at least three times a week for optimal growth, ensuring they always have access to an external water source.
Do Myrmica tulinae ants sting?
Yes, Myrmica tulinae workers are equipped with stingers. While their sting is generally considered mild and not medically significant to humans, it can be painful. It's always a good practice to handle your setup with care and avoid direct contact with the ants.
Is diapause necessary for Myrmica tulinae?
Absolutely! Diapause, or hibernation, is crucial for the long-term health and reproductive success of Myrmica tulinae colonies. They typically need a cool period, usually from November to March, at temperatures between 5-10°C. This mimics their natural seasonal cycle and allows the queen and larvae to rest and reset.
What kind of food do Myrmica tulinae eat?
Myrmica tulinae are not particularly picky eaters. For carbohydrates, they readily accept sugars from fruit, sugar water, or ant jellies. For protein, offer them small insects like fruit flies, mealworms, or small crickets. Always sterilize wild-caught insects by freezing or boiling them to prevent introducing mites or pathogens to your colony.
How large do Myrmica tulinae colonies get?
While specific numbers for Myrmica tulinae are not widely documented, other Myrmica species typically form medium-sized colonies ranging from hundreds to a few thousand workers, with some larger colonies reaching up to 10,000 workers. The growth rate can be slow initially but picks up considerably once more workers are present.
Can Myrmica tulinae queens live together (polygyny)?
Yes, Myrmica tulinae is a polygynous species, meaning multiple queens can co-exist within the same colony. This can lead to faster colony development and a larger overall colony size. It's common for Myrmica colonies in the wild to have several functional queens.
Why is my Myrmica tulinae queen not laying eggs?
Several factors can cause a semi-claustral queen like Myrmica tulinae to not lay eggs. The most common reasons include stress from too much disturbance (especially during the initial founding phase), insufficient feeding (as they need to forage), or if it's nearing their natural diapause period. Ensure she has a dark, quiet spot and consistent food.
What temperatures are best for Myrmica tulinae?
Myrmica tulinae thrive best in a temperature range of 18-28°C. For their nest area, aiming for 20-25°C is ideal. Providing a thermal gradient in your setup, where one part of the nest is warmer, allows the ants to regulate their temperature to their preference. Avoid keeping them in consistently cold, air-conditioned rooms.
Do Myrmica tulinae make trash piles?
Unlike some other ant species, Myrmica ants, including Myrmica tulinae, are not particularly tidy and often do not create organized trash piles. They tend to carry dead ants or waste material away from the nest. This means you, as the antkeeper, will need to regularly clean out their outworld to prevent mold and maintain a hygienic environment, as they'll waste energy trying to dispose of refuse they can't remove from an enclosed space.
