Myrmica gebaueri

Myrmica gebaueri

Myrmica gebaueri is one of the smallest species in the entire Myrmica genus, with workers measuring only about 4-5mm. These tiny ants are native to the Tibetan Plateau in northeastern Tibet, where they live at high elevations between 2900-3500 meters in montane to subalpine grasslands, typically in moist pastures. They were only formally described as a separate species in 2018,as part of what was previously recognized as the Myrmica tibetana complex ^[1].

This species forms polygynous colonies, meaning multiple queens live and reproduce together in the same nest, a relatively uncommon trait among Myrmica. They build their nests in soil, under stones, or tucked into grass tussocks. Their small size, high-altitude origin, and multi-queen colony structure make them a challenging but interesting species for experienced antkeepers who can provide the cool, stable conditions they need ^[1][2].

Quick Summary

• Difficulty: Medium
• Origin & Habitat: Northeastern Tibet (35.5-38.0°N,99.8-102.8°E) at altitudes of 2900-3500m. Found in montane to subalpine grassland, usually moist pastures. Nests in soil, under stones, or in grass tussocks ^[1][2].
• Colony Type: Polygynous, multiple queens live together in the same colony. This is one of the defining characteristics of the species ^[1].
  • Colony: Polygyne
  • Founding: Claustral
• Size & Growth:
  • Queen: Estimated 6-7mm based on typical Myrmica proportions for a small species
  • Worker: Approximately 4-5mm (CS 918 μm), one of the smallest Myrmica species ^[1]
  • Colony: Unknown for this species, but likely similar to related Myrmica at high altitudes, possibly several hundred workers
  • Growth: Likely slow to moderate, high altitude species typically develop more slowly due to cooler conditions
  • Development: Estimated 8-12 weeks based on typical Myrmica development at cool temperatures. Related high-altitude Myrmica species often take longer than lowland species. (Development is temperature-dependent, cooler temperatures slow growth. Expect slower development than tropical ants.)
• Antkeeping:
  • Temperature: Keep cool, around 15-20°C. This is a high-altitude species from Tibet and does not tolerate warmth well. Room temperature (20-22°C) is acceptable, but avoid any heating. They may do well at temperatures that would be too cold for most tropical ants, think mountain meadow conditions ^[1].
  • Humidity: Moderate to high. They come from moist montane pastures, so keep the nest substrate consistently damp but not waterlogged. Allow some drier areas in the outworld for foraging. Mist occasionally but monitor for mold.
  • Diapause: Yes, this species originates from high altitudes with harsh winters. Provide a winter rest period at 5-10°C for 3-4 months during winter months (roughly November-February in the Northern Hemisphere). This mimics their natural seasonal cycle at 2900-3500m elevation ^[1].
  • Nesting: Y-tong (AAC) nests or plaster nests work well. The key is maintaining cool, stable temperatures and consistent moisture. Their small size means they do well with appropriately scaled chambers. Avoid overheating, these ants are adapted to cool conditions.
• Behavior: Generally docile and non-aggressive. Like most Myrmica, they have a functional stinger but rarely use it unless directly threatened. Workers are active foragers and will search for food in the outworld. Their small size means escape prevention is important, use fine mesh barriers and check for gaps. They are not particularly fast-moving compared to some ants. Polygynous colonies tend to be more stable and longer-lived than single-queen colonies, as the death of one queen does not collapse the colony ^[1].
• Common Issues: high altitude requirements mean they do poorly in warm homes, avoid keeping them in rooms that get above 22°C, their very small size makes escape prevention critical, they can squeeze through tiny gaps, slow development can frustrate beginners, colonies may take months to show significant growth, winter diapause is essential for long-term health, skipping hibernation will weaken the colony, polygynous structure means you may receive multiple queens, this is normal for this species and they should be kept together

Housing and Nest Setup

Myrmica gebaueri does well in Y-tong (AAC) nests or plaster formicariums that can hold moisture. The key requirement is keeping the nest cool, avoid any heat sources. A temperature range of 15-20°C is ideal. Because they come from high-altitude Tibetan grasslands, they are adapted to cooler, more stable conditions than most ant species kept in captivity.

For the outworld, provide a simple setup with a water tube and feeding area. Their small size means they don't need large spaces. Use a test tube setup for founding colonies, then move to a small formicarium once the colony reaches 20-30 workers. Escape prevention is important, these tiny ants can slip through standard test tube cotton if it becomes loose, and through gaps in lid seals. Use fine mesh on any ventilation holes.

Keep the nest substrate consistently moist but never waterlogged. High-altitude grasslands have reliable moisture, so they are not drought-tolerant. Check moisture levels every few days and rehydrate when the substrate begins drying. The outworld can be kept drier, a water tube provides drinking water while the nest maintains humidity. ^[1][2]

Feeding and Diet

Like other Myrmica species, Myrmica gebaueri is omnivorous and will accept both protein and sugar sources. Offer sugar water, honey, or diluted maple syrup as a constant energy source. For protein, provide small insects like fruit flies, small mealworms, or other appropriately-sized prey. They are small ants, so prey items should be tiny, fruit flies and springtails are ideal.

In the wild, high-altitude Myrmica species often forage for honeydew from aphids and small insects. Their small size means they cannot take down large prey. Feed small amounts of protein 2-3 times per week, removing any uneaten prey after 24 hours to prevent mold. Sugar water should always be available.

Because they are from a polygynous colony, they may have higher food demands than single-queen species of similar size, multiple egg-laying queens require more protein to sustain reproduction. Monitor food consumption and adjust accordingly. ^[2]

Temperature and Seasonal Care

Temperature management is the most critical aspect of keeping Myrmica gebaueri successfully. This is a high-altitude species from the Tibetan Plateau, and they simply do not tolerate warm conditions. Keep the entire setup in a cool room, ideally 15-20°C. Room temperature (around 20-22°C) is acceptable, but do not use any heating mats or cables.

During winter, provide a proper diapause period. This species experiences harsh winters at 2900-3500m elevation in Tibet, so they need 3-4 months of cold rest around 5-10°C. The diapause period (roughly November-February in the Northern Hemisphere) is essential for colony health and longevity. Without this winter rest, colonies will gradually weaken and die off.

Do not attempt to speed up development by heating the nest, this species has evolved to thrive at cool temperatures. Attempting to keep them warm will likely kill the colony. If your room is naturally warm in summer, consider whether this species is suitable for your setup. ^[1][2]

Colony Structure and Multi-Queen Care

Myrmica gebaueri is naturally polygynous, meaning colonies contain multiple reproductive queens living together. This is unusual among Myrmica and has implications for captive care. Unlike monogyne species where you keep just one queen, polygynous colonies can have several queens simultaneously laying eggs.

When starting a colony, you may receive multiple queens, this is normal and they should be kept together. The presence of multiple queens makes the colony more resilient: if one queen dies, others can continue reproducing. This also means colonies can reach larger sizes than single-queen colonies of similar species.

The polygynous structure also affects feeding, multiple egg-laying queens require more protein to sustain their reproduction. Be prepared to provide more food than you might for a single-queen colony of similar size. The colony will also be more stable long-term, as there is no single point of failure for reproduction. ^[1]

Frequently Asked Questions

References