Myrmica wesmaeli - "Wesmael's Ant"
Myrmica wesmaeli is a European ant species belonging to the 'fire ant' genus Myrmica. While there haven't been extensive studies specifically on its ecology, it's known to be quite similar to other Myrmica species. They are characterized by their reddish-brown color, and like all Myrmica, they possess a sting. Queens and workers have distinct features, with queens being notably larger. They are known to nest under stones and are often found in subalpine pastures. Their nuptial flights typically occur in late summer to early autumn.
- Difficulty: Medium
- Origin & Habitat: Europe (specifically, the south-eastern Pyrenean mountains in Andorra, China, France, Iberian Peninsula, Portugal, Spain) in Subalpine pastures, often nesting under stones at altitudes of 1500-1800m..
- Colony Type: Polygynous (multiple queens), semi-claustral (queen forages) founding.
- Size & Growth:
- Queen: 7-12mm
- Worker: 5-8mm
- Colony: Medium (hundreds to a few thousands, up to 10,000 workers). Slow at first, accelerating with more queens. growth.
- Antkeeping:
- Temperature: Prefers room temperature (21-24°C). Can have a heated area (around 25°C for a few hours daily) for the brood, but ensure humidity is maintained. Avoid high temperatures for the entire nest..
- Humidity: High humidity (50-70%) is crucial. Ensure the nest is kept moist, especially a large portion of it. They are prone to drying out..
- Diapause: Required. 3-5 months at 5-10°C.
- Nesting: They will nest in various setups, including soil, under stones, or in decaying wood in the wild. For captivity, ytong nests or soil setups are recommended. Ensure enough moisture-binding material if using an artificial nest..
- Behavior: Medium (towards handler, food, or other ants) aggressiveness.
- Common Issues: Dehydration, Mold in nest (due to high humidity without proper ventilation), Mites (especially from unsterilized food), Colony stalling (if temperature or humidity requirements aren't met), Queen stress (from frequent disturbances or too large a founding space).
Myrmica wesmaeli, like other Myrmica species, are known for their semi-claustral founding. This means that a founding queen will venture out to forage for food, rather than sealing herself off entirely to raise her first batch of nanitics. Because of this behavior, it's crucial to provide a small outworld with access to food and water during the initial founding stage. Do not expect them to stay hidden away like fully claustral species; they need to be fed regularly from the start.
Humidity is paramount for Myrmica wesmaeli. These ants are highly susceptible to dehydration, so maintaining a consistently moist environment within their nest is non-negotiable. While a partial hydration of the nest is often sufficient, it needs to be done regularly. If you find your formicarium drying out too quickly, consider adding materials that retain moisture well or opting for a setup specifically designed for higher humidity levels.
When it comes to feeding, Myrmica species aren't particularly fussy. They readily accept various sugar sources, like honey water, fruit, or ant jellies. For protein, offer them small insects such as fruit flies, mealworms, or crickets. It's important to remember that Myrmica have a small social stomach, so frequent, smaller feedings are more beneficial than large, infrequent ones. Always sterilize wild-caught insects by freezing or boiling them to prevent introducing mites or diseases to your colony.
Myrmica wesmaeli colonies, being polygynous, can host multiple queens. This characteristic allows for the potential of larger colony sizes and often contributes to a faster growth rate once the colony is established. However, it's worth noting that not all queens in a polygynous colony might be actively laying eggs; some may even take on worker-like roles within the nest. This fascinating dynamic adds another layer to their colony structure.
Like many temperate ant species, Myrmica wesmaeli requires a period of diapause, or hibernation, during the colder months. This is a vital part of their annual cycle for the colony's long-term health. Typically, diapause should occur from November to March at cooler temperatures, ideally between 5-10°C. During this time, the colony will become largely inactive. It's essential to sync their diapause with the natural seasons to ensure their well-being.
Frequently Asked Questions
What kind of nest is best for Myrmica wesmaeli?
Myrmica wesmaeli thrives in setups that offer consistent, high humidity. Ytong nests or naturalistic soil setups are generally excellent choices, as they help maintain the crucial moisture levels these ants need. Remember to ensure there’s enough material to hold moisture, and avoid dry 3D-printed nests.
How often should I feed my Myrmica wesmaeli colony?
Since Myrmica species have a somewhat small social stomach, it's better to offer them smaller amounts of food more frequently. Aim to feed them at least three times a week for optimal growth and health, providing both sugary liquids and protein sources.
Do Myrmica wesmaeli sting, and is it painful?
Yes, Myrmica wesmaeli, like other 'fire ants' in the Myrmica genus, can sting. The sting is generally described as rather painful at the moment of impact, but the discomfort typically fades quickly and is not considered dangerous for humans.
How do I ensure my Myrmica wesmaeli colony hibernates properly?
For a successful diapause, aim for temperatures between 5-10°C, usually from November through March. You can use a cool room or even a refrigerator. It's important that their hibernation period aligns with natural seasonal changes for their long-term health.
Can Myrmica wesmaeli colonies have more than one queen?
Absolutely! Myrmica wesmaeli are polygynous, meaning their colonies can house multiple queens. This is a great feature as it can lead to larger colony sizes and a faster overall growth rate, making for a more dynamic and active display.
Why is my Myrmica wesmaeli queen not laying eggs or eating them?
Queen stress is a common culprit. If a founding queen is disturbed too frequently, exposed to too much light, or placed in an overly large founding space, she might become stressed and stop laying, or even consume her eggs. It's best to keep her in a dark, quiet, and appropriately sized test tube or founding nest.
What should I feed Myrmica wesmaeli for protein?
They are quite fond of protein! Offer them small insects like fruit flies, mealworms, or micro-crickets. If you're using insects caught from outside, always freeze or boil them first to eliminate any potential parasites or diseases that could harm your colony.
How large can a Myrmica wesmaeli colony get?
These colonies can grow to a respectable size. While many Myrmica colonies are often in the hundreds to a few thousand workers, they can potentially reach up to 10,000 workers, especially in polygynous setups where multiple queens contribute to egg-laying.
Do Myrmica wesmaeli need heating?
They generally do well at room temperature (around 21-24°C). However, providing a small heated area within their nest (e.g., a heat mat under one part of the formicarium) at about 25°C can encourage brood development. Just be mindful to maintain high humidity in heated areas to prevent desiccation.
What does 'semi-claustral founding' mean for Myrmica wesmaeli?
Semi-claustral means the queen isn't completely self-sufficient during the founding stage. Unlike fully claustral queens who rely solely on their fat reserves, a Myrmica wesmaeli queen will forage outside the nest for food to support herself and her first brood. This means you need to provide a small outworld with food and water for her.
Are Myrmica wesmaeli aggressive?
Myrmica species, including Myrmica wesmaeli, are generally considered medium in aggressiveness. They will defend their nest and food sources, making them interesting to observe during feeding and interactions, but they aren't typically overly hostile towards handlers unless provoked.
Why is my colony inactive, or moving slowly?
Inactivity or slow movement can often be attributed to temperature or humidity issues. Ensure your colony is kept at their preferred temperature range (around 21-24°C, with an optional heated spot) and that humidity levels are consistently high. If they're in diapause, inactivity is normal.
How can I prevent mold in my Myrmica wesmaeli nest?
While Myrmica wesmaeli needs high humidity, stagnant air can lead to mold. Ensure your formicarium has good ventilation. If your setup has limited exits for its size, mold can become an issue. Regularly inspect the nest and clean any waste.
