Myrmica shanyii

Quick Summary

• Difficulty: Unknown, likely Medium based on genus patterns
• Origin & Habitat: Emei and Gongga Mountains in Sichuan, China at 2700-2900m elevation. Found in mixed coniferous broad-leaved forest, nesting in dead wood on the forest floor covered with brown forest soil ^[1][2].
• Colony Type: Colony structure has not been directly studied for this species.
• Size & Growth:
  • Queen: Size data unavailable, no queen measurements have been published
  • Worker: About 6mm ^[1]
  • Colony: Unknown, no colony size data available for this species
  • Growth: Unknown
  • Development: Unknown, no developmental studies exist for this species (This is a newly described species with no captive breeding data available.)
• Antkeeping:
  • Temperature: Cool conditions required, aim for 18-22°C based on their high-elevation mountain habitat. Avoid overheating ^[1].
  • Humidity: Moderate to high humidity preferred. Keep nest substrate moist but not waterlogged, these forest-floor ants need damp conditions similar to their natural habitat ^[1].
  • Diapause: Likely required. As a mountain species from temperate China, they probably need a winter dormancy period. Provide 2-3 months at 5-10°C in winter.
  • Nesting: In captivity, use test tube setups initially, then transition to Y-tong or plaster nests. They naturally nest in dead wood, so naturalistic setups with wood pieces work well. Keep nesting material moist.
• Behavior: Myrmica ants are typically non-aggressive but will defend their nest if threatened. Workers are moderately active foragers. Escape risk is moderate, standard test tube barriers should suffice for ants of this size.
• Common Issues: as a newly described species (2024), captive breeding information is extremely limited, expect some trial and error, high-elevation origin means they are likely sensitive to overheating, keep them cool, winter dormancy appears necessary but exact requirements are unconfirmed, wild-caught colonies may have parasites or diseases since the species has not been captive-bred extensively, their very short propodeal spines are unusual, monitor for any health indicators related to this morphological trait

Discovery and Taxonomy

Myrmica shanyii has a fascinating taxonomic history. It was first described in 2024 as Myrmica shanyii by Yuqing He and Zhilin Chen et al., based on workers collected from two high mountain localities in Sichuan, China: Emei Mountain at 2900m elevation and Gongga Mountain at 2740m elevation. However, later in 2024,Dmitry Zharkov and colleagues re-examined the species and transferred it to the genus Myrmica based on several key morphological features. The metasternal process structure, mandibular tooth count (8-10 rather than the 12+ found in Manica),3-segmented antennal club, and transverse thoracic sculpture all clearly identify this as a Myrmica species rather than Manica. This makes it only the third Myrmica species known to have very short propodeal spines, alongside the fossil species Myrmica paradoxa from Eocene amber and Myrmica inermis from Yunnan Province, China ^[1][2][3].

Natural Habitat and Distribution

This species is known only from two mountain localities in Sichuan Province, China, Emei Mountain (Leshan City) and Gongga Mountain (Garze Tibetan Autonomous Prefecture). Both locations are at high elevations around 2700-2900m in mixed coniferous broad-leaved forests. The ants were collected from dead wood on the forest floor covered with brown forest soil, indicating they are forest-floor specialists that nest in rotting wood. The climate in these high mountain forests is cool and humid, with significant seasonal variation. This habitat suggests these ants are adapted to cooler conditions than many lowland ant species and likely require a distinct winter dormancy period ^[1].

Housing and Nesting

For captive care, start with a standard test tube setup for the founding queen. Once the colony reaches 15-20 workers, consider transitioning to a Y-tong or plaster nest. Since they naturally nest in dead wood, you might also try a naturalistic setup with rotten wood pieces. Keep the nesting material consistently moist, these forest-floor ants need damp conditions but avoid waterlogging. The key requirement is avoiding heat, keep them in a cool location away from direct sunlight and heat sources. Room temperature (around 20°C) is likely ideal. For outworld space, provide a moderate foraging area. Standard escape prevention measures work well for ants of this size ^[1].

Feeding and Diet

Like other Myrmica species, these ants are likely omnivorous with a preference for protein. Offer protein sources such as small insects (fruit flies, small crickets, mealworms), and provide sugar water or honey as an energy source. In the wild, they probably forage for honeydew from aphids and other small invertebrates. Feed the colony 2-3 times per week, adjusting based on how quickly food is consumed. Remove uneaten prey after 24-48 hours to prevent mold. Sugar water should always be available once workers are active.

Seasonal Care and Winter Dormancy

As a high-elevation mountain species from temperate China, Myrmica shanyii almost certainly requires a winter dormancy period. Provide 2-3 months of cold temperatures around 5-10°C during winter months (typically November-February in the Northern Hemisphere). Reduce feeding during this period and allow the colony to slow down naturally. Do not feed during deep dormancy. This winter rest is likely essential for colony health and reproductive success. In summer, avoid temperatures above 25°C, they are adapted to cool mountain conditions and may struggle in warm environments.

Frequently Asked Questions

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References