Scientific illustration of Myrmecina hirsuta ant - showing key identification features including head, thorax, and gaster.

Myrmecina hirsuta

Non-Parasitic Queen No Gamergate
Sci. Name
Myrmecina hirsuta
Tribe
Crematogastrini
Subfamily
Myrmicinae
Author
Gu & Chen, 2025
Distribution
Found in 0 countries

Introduction

Myrmecina hirsuta is a tiny ant species native to Zhejiang province in eastern China. Workers measure 3.70-3.76mm in total length, making them among the smaller ants in the Myrmicinae subfamily . The species gets its name 'hirsuta' from the dense, long erect hairs covering its body, particularly prominent on the mesosoma. A standout feature is its exceptionally large eyes, composed of 37-40 ommatidia - significantly more than most related species . These ants are part of the Myrmecina genus, which contains over 100 species distributed primarily across Asia and Australasia.

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Status by country, from Kass et al. 2022 & Wong et al. 2023

Native Invasive Introduced (indoor) Intercepted Unknown
2000 - 2026

Quick Summary

  • Difficulty: Easy
  • Origin & Habitat: Myrmecina hirsuta is found in Zhejiang province, eastern China. Based on related Myrmecina species, these ants likely inhabit forest floors and shaded areas, nesting in soil or under stones.
  • Colony Type: Colony structure is unconfirmed for this specific species. Most Myrmecina species are monogyne (single queen colonies), though some may have multiple queens. Colony size is unknown but likely small based on genus patterns.
  • Size & Growth:
    • Queen: Size data unavailable, queen measurements not described in available literature
    • Worker: 3.70-3.76mm [1]
    • Colony: Likely up to 300 workers based on genus patterns
    • Growth: Moderate, inferred from typical Myrmecina development
    • Development: Estimated 6-10 weeks based on related Myrmecina species and typical Myrmicinae development at room temperature (Development time is estimated, not directly studied for this species. Room temperature (20-24°C) is likely optimal.)
  • Antkeeping:
    • Temperature: Keep at room temperature, roughly 20-24°C. Based on the temperate/subtropical climate of Zhejiang province, these ants should adapt well to typical indoor conditions.
    • Humidity: Moderate humidity is likely preferred. Keep the nest substrate moist but not waterlogged, with some drier areas available. Myrmecina species typically inhabit forest floor environments with moderate moisture.
    • Diapause: Unknown for this specific species. Zhejiang has cold winters, so a winter rest period (diapause) at 10-15°C for 2-3 months may be beneficial, though this is not confirmed.
    • Nesting: Based on genus preferences, these ants likely prefer soil-based nests with good moisture retention. A test tube setup works well for founding colonies. For established colonies, a small formicarium with soil or plaster chambers scaled to their tiny size would be appropriate.
  • Behavior: These ants are small and generally docile. They are not aggressive and unlikely to sting humans. Their tiny size means they are adept at squeezing through small gaps, escape prevention is critical. Foraging is likely opportunistic, with workers collecting small insects, honeydew, and nectar. They are not known for any unusual or dramatic behaviors.
  • Common Issues: escape prevention is critical due to their very small size, use fine mesh and tight-fitting lids, slow colony growth can frustrate beginners, patience is needed, wild-caught colonies may have parasites that can devastate captive colonies, overfeeding can lead to mold problems in small nests, test tube setups can flood if water reservoirs are too large for such tiny ants

Housing and Nest Setup

For founding colonies, a simple test tube setup works well. Fill the tube with water reservoir (about 1/3 capacity) and plug with cotton, the small size of these ants means you should use tubes with narrower diameters to prevent flooding. Cover the setup with a dark sleeve for the first few weeks until workers emerge. For established colonies, a small formicarium with soil or gypsum plaster chambers works well. The chambers should be small and scaled to their tiny 3.7mm workers, avoid large, open spaces. A small outworld for foraging completes the setup. [1]

Feeding and Diet

Myrmecina hirsuta is likely an omnivorous species based on genus patterns. Feed a mix of protein and sugar sources. Protein options include small live prey like fruit flies, pinhead crickets, or mealworm pieces. Sugar can be provided as diluted honey, sugar water, or honeydew. Feed small amounts 2-3 times per week and remove uneaten food promptly to prevent mold. Because of their tiny size, food particles should be appropriately sized, very small pieces that workers can manage.

Temperature and Seasonal Care

Keep these ants at room temperature, ideally 20-24°C. This matches the temperate/subtropical climate of their native Zhejiang province. No special heating is typically required unless your room temperature falls below this range. A heating cable on one side of the nest can create a temperature gradient if needed. Winter care is not well documented for this species, but a period of cooler temperatures (10-15°C) for 2-3 months during winter may simulate their natural seasonal cycle and benefit colony health. [1]

Behavior and Temperament

Myrmecina hirsuta is a docile, non-aggressive species. Workers are small and unlikely to sting humans. They are not known for any unusual defensive behaviors like alarm pheromone spraying or biting. Activity levels are moderate, workers forage individually rather than in large raiding parties. Their tiny size means they can easily slip through standard barrier methods, so escape prevention requires extra attention. Use fine mesh (at least 0.5mm) on all openings and check for gaps regularly. [1]

Frequently Asked Questions

How long does it take for Myrmecina hirsuta to produce first workers?

The egg-to-worker timeline is not directly documented for this species. Based on related Myrmecina species and typical Myrmicinae development, expect 6-10 weeks from egg to first worker at room temperature (20-24°C).

How big do Myrmecina hirsuta colonies get?

Colony size is not documented for this specific species. Based on genus patterns, colonies likely reach up to 300 workers at maturity. They are not large colony builders.

Do Myrmecina hirsuta ants sting?

These ants are too small to effectively sting humans. They are docile and not considered dangerous. However, their tiny size means they can easily escape from enclosures.

What do I feed Myrmecina hirsuta?

Feed a balanced diet of small protein sources (fruit flies, tiny crickets, mealworm pieces) and sugar sources (honey water, sugar water). Offer small amounts 2-3 times per week and remove uneaten food promptly.

Can I keep Myrmecina hirsuta in a test tube?

Yes, test tubes work well for founding colonies. Use a tube with a narrow diameter to prevent flooding, these are very small ants. Ensure the water reservoir is appropriately sized and use cotton plugs that fit tightly.

What temperature do Myrmecina hirsuta ants need?

Room temperature of 20-24°C is ideal. This matches their natural environment in Zhejiang province, China. No special heating is typically needed unless your home is unusually cold.

Are Myrmecina hirsuta good for beginners?

Yes, this species is considered easy to keep. They are docile, require no special heating in most homes, and have straightforward feeding requirements. The main challenges are their tiny size (requiring excellent escape prevention) and relatively slow growth.

Do Myrmecina hirsuta need hibernation?

Diapause requirements are not confirmed for this species. However, since they come from Zhejiang province which has cold winters, providing a cool period (10-15°C) for 2-3 months during winter may benefit colony health.

Why are my Myrmecina hirsuta escaping?

Their tiny 3.7mm size means they can squeeze through the smallest gaps. Use fine mesh (0.5mm or smaller) on all openings, check lid seals regularly, and ensure any barrier coating (like fluon) is applied properly and reapplied as needed.

How many queens does Myrmecina hirsuta have?

The colony structure is not documented for this specific species. Most Myrmecina species are monogyne (single queen), but this has not been confirmed for Myrmecina hirsuta.

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References

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