Myrmica tenuispina - "Slender-Spined Myrmica Ant"
Myrmica tenuispina is a lesser-known ant species belonging to the Myrmicinae subfamily. These ants are characterized by their relatively long propodeal spines, which distinguish them from similar Myrmica species. Their frontal carinae, located on the head, are strongly curved outwards in the anterior third, forming distinctive wide, subsquare frontal lobes. Workers and queens share superficial similarities with other Myrmica groups like rubra or smythiesii, but the unique frontal lobe shape sets M. tenuispina apart. The species name 'tenuispina' itself refers to these 'thin' or 'slender' spines. While specific size ranges for queens and workers are not widely detailed, Myrmica ants generally range from small to medium-sized. They are known for inhabiting high-altitude regions and are often found nesting in soil or under stones.
- Difficulty: Medium
- Origin & Habitat: Middle Asia and NE Afghanistan (including Uzbekistan, Kyrgyzstan, Tajikistan, Turkmenistan, and India) in Subalpine meadows at altitudes between 2400 and 4100m above mean sea level, nesting in soil and under stones..
- Colony Type: Polygyne (multiple queens), claustral (queen seals herself in) founding.
- Size & Growth:
- Queen: Not specified
- Worker: Not specified
- Colony: Small (hundreds). Slow growth.
- Antkeeping:
- Temperature: Aim for a temperature range of 21-24°C in the nest area. While they can tolerate room temperature, a gentle heat source, like a heat mat or lamp, can be beneficial if applied to only one part of the nest. This allows the ants to regulate their own temperature..
- Humidity: High humidity is crucial for Myrmica tenuispina, ideally between 50-70% within the nest. It's important to ensure the nesting material can bind moisture effectively to maintain these levels..
- Diapause: Required. 3-4 months at 8-10°C.
- Nesting: Myrmica tenuispina prefers nesting in soil and under stones in their natural habitat. For captive setups, a naturalistic formicarium with a good substrate that retains moisture, such as soil or loam, is highly recommended. Test tubes are suitable for founding colonies..
- Behavior: Medium (towards handler, food or other ants) aggressiveness.
- Common Issues: Humidity fluctuations, Colony stalling due to insufficient protein, Stress from vibrations or excessive light, Mold in nest (from overfeeding or poor ventilation).
One fascinating aspect of Myrmica ants, including Myrmica tenuispina, is their complex relationship with certain butterfly species, particularly the Phengaris genus. These butterflies are social parasites that lay their eggs near Myrmica nests. Once the caterpillars hatch, they are adopted by the ants and brought into the nest, where they feed on the ant brood. This intricate host-parasite relationship highlights the crucial ecological role Myrmica ants play in their native ecosystems, making their care in captivity even more intriguing for antkeepers interested in broader ecological interactions.
While detailed information on the specific diet of Myrmica tenuispina is limited, most Myrmica species are omnivorous, with a strong preference for protein. In the wild, they consume various arthropods, honeydew from sap-feeding insects, and even sometimes pollen. For your colony, ensure a consistent supply of insect protein, such as small crickets, mealworms, or fruit flies. Sweet liquids like sugar water or honey water should also be provided to meet their carbohydrate needs. Remember to offer a varied diet to ensure your colony receives all necessary nutrients for optimal growth and health.
Humidity management is paramount for Myrmica tenuispina colonies. Coming from high-altitude subalpine meadows, they are accustomed to moist environments. If the nest becomes too dry, it can lead to stress, brood loss, and even colony collapse. Regularly check the moisture levels in your formicarium and re-humidify as needed. Using a nest material that effectively holds moisture, like natural soil or a specialized hydration system in an acrylic setup, will be key to their long-term success. It's often recommended to keep one part of the nest consistently moist, allowing the ants to choose their preferred humidity level.
Though Myrmica ants are known to have a sting, it is generally considered mild for humans, often compared to a nettle sting. However, they can be quite aggressive towards prey and when their nest is disturbed. This makes them active hunters and engaging to observe in an outworld. When handling or working with your colony, exercise caution to avoid being stung. While not medically significant for most people, an allergic reaction is always a possibility, so it's wise to be prepared.
Frequently Asked Questions
What kind of formicarium is best for a Myrmica tenuispina colony?
For Myrmica tenuispina, a formicarium that allows for high humidity and incorporates natural substrates like soil or loam is ideal. Options like ytong, plaster, or even naturalistic setups with real soil are excellent. Ensure there's a good hydration system to keep the nest moist, as these ants thrive in damp conditions. For smaller founding colonies, a test tube setup is perfect to start.
How often should I feed my Myrmica tenuispina ants?
Myrmica tenuispina are active foragers and require consistent feeding. Since they don't store a lot of food, aim to offer sweet liquids (sugar water or honey water) at least 3 times a week for optimal results. Protein sources, such as small feeder insects, should be provided 2-3 times a week, especially when the colony is growing and has a lot of brood.
Do Myrmica tenuispina queens do pleometrosis?
Yes, like many Myrmica species, Myrmica tenuispina queens can indeed engage in pleometrosis, meaning multiple queens can cooperate during the founding phase of a colony. This can sometimes lead to faster colony growth in the initial stages. However, be aware that in some polygynous species, queens may eventually become antagonistic as the colony matures.
Is their sting painful?
The sting of Myrmica tenuispina is generally considered mild for humans, often described as similar to a nettle sting. While it might cause some temporary discomfort, it's typically not severe. Nevertheless, it's always wise to exercise caution when interacting with your colony, as individual reactions to stings can vary, and they will sting if threatened or disturbed.
Do Myrmica tenuispina ants need to hibernate?
Yes, as a species originating from temperate and high-altitude regions, Myrmica tenuispina absolutely requires a diapause period (hibernation) to mimic their natural annual cycle. This typically involves lowering their nest temperature to around 8-10°C for about 3-4 months during the cooler parts of the year. Skipping diapause can negatively impact queen longevity and colony health.
What's the best way to introduce new food to the colony?
When introducing new food, place it in their outworld. For live feeder insects, consider pre-killing or incapacitating them, especially for smaller colonies, to prevent worker casualties. Always remove uneaten food within 24-48 hours to prevent mold growth, which can be detrimental to the colony's health, particularly in humid setups.
How large can a Myrmica tenuispina colony get?
While exact figures for Myrmica tenuispina are not widely documented, Myrmica colonies generally tend to be on the smaller side compared to some other ant genera, typically ranging in the hundreds of workers. Some species can reach into the thousands, but they are not known for forming supercolonies of tens of thousands or millions like some other common ant species.
Why is humidity so important for this species?
Myrmica tenuispina originates from subalpine meadows, which are naturally moist environments. High humidity within their nest is vital for the development of their brood (eggs, larvae, pupae) and for the overall health of the colony. Without adequate moisture, the brood can dry out, leading to colony decline. Proper hydration also helps maintain the microclimate they prefer.
Are Myrmica tenuispina suitable for beginners?
Myrmica tenuispina is generally considered a 'Medium' difficulty species, making them more suitable for intermediate antkeepers rather than absolute beginners. Their specific humidity and diapause requirements, coupled with their predatory nature, mean they need a bit more attention to detail than extremely easy-to-care-for species like Lasius niger. However, for those ready for a slightly more challenging and rewarding experience, they are an excellent choice!
