Myopias etsukoae

Quick Summary

• Difficulty: Medium
• Origin & Habitat: Borneo (Sabah, Malaysia), lowland primary rainforest. Nests in rotting wood on the forest floor ^[1].
• Colony Type: Unconfirmed colony structure. Most Myopias species are monogyne (single queen), but specific data for M. etsukoae is lacking.
• Size & Growth:
  • Queen: Unknown, not yet described
  • Worker: ~4.9mm ^[1]
  • Colony: Unknown, likely small to moderate based on genus patterns
  • Growth: Unknown, likely moderate
  • Development: Estimated 6-10 weeks based on typical Ponerinae development at warm temperatures (Direct data unavailable, inferred from related Ponerinae species. Warmer temperatures (24-28°C) likely accelerate development.)
• Antkeeping:
  • Temperature: Keep at 24-28°C. As a lowland rainforest species from Borneo, they prefer warm, stable conditions. A gentle gradient allowing them to self-regulate is ideal.
  • Humidity: High humidity required, aim for 70-85%. Their natural habitat is the humid rainforest floor, so keep the nest substrate consistently moist but not waterlogged.
  • Diapause: Likely no true diapause. As a tropical species from lowland Borneo, they probably do not require hibernation. However, a slight reduction in temperature during cooler months may be beneficial.
  • Nesting: Naturalistic setup with rotting wood, cork, or a well-humidified acrylic/plaster nest works best. They naturally nest in decaying wood on the forest floor, so provide damp substrate they can tunnel through.
• Behavior: Ponerinae ants are typically predatory with a well-developed sting. Workers are active foragers that hunt small invertebrates. They have relatively large eyes compared to other Myopias species, suggesting active daytime hunting. Escape prevention should be moderate, these are medium-sized ants but can climb well. They are likely defensive of their nest and may sting if threatened.
• Common Issues: limited availability, this is a newly described species rarely available in the antkeeping hobby, no established captive breeding protocols, keepers may need to experiment with conditions, humidity management is critical, too dry and colonies will fail, too wet and mold becomes problematic, predatory diet requirements may be challenging, need consistent small live prey, tropical species may be sensitive to temperature drops or drafts

Housing and Nest Setup

Myopias etsukoae naturally nests in rotting wood on the rainforest floor of Borneo ^[1]. For captive care, a naturalistic setup works best, a container filled with damp substrate (a mix of soil and rotting wood material) allows them to create galleries similar to their natural environment. Alternatively, a well-humidified acrylic or plaster nest with narrow chambers can work, provided humidity is maintained high. The key is providing consistently damp conditions without flooding. Because they nest in wood, adding small pieces of decaying wood or cork to the setup can encourage natural tunneling behavior. Outworld space should include areas for hunting and foraging.

Feeding and Diet

As a Ponerinae ant, Myopias etsukoae is predatory and should be fed small live invertebrates. Based on genus patterns, they likely hunt small arthropods including springtails, fruit flies, small beetles, and other micro-prey. Offer protein-rich foods 2-3 times per week, removing any uneaten prey within 24 hours to prevent mold. While sugar sources are sometimes accepted by Ponerinae, they are not a primary food source, focus on providing consistent small live prey. Some keepers report success offering tiny pieces of mealworms or other insect parts for established colonies.

Temperature and Humidity

This is a lowland tropical species from Borneo's primary rainforest, so warm and humid conditions are essential. Maintain temperatures between 24-28°C, avoiding drops below 22°C. Room temperature may suffice in warm climates, but a small heating cable on one side of the nest can create a beneficial gradient. Humidity should be high, aim for 70-85% relative humidity. The nest substrate should feel consistently damp to the touch. Use a water reservoir or mist regularly to maintain moisture, but ensure adequate ventilation to prevent stagnant air and mold buildup. A hygrometer can help monitor conditions. ^[1]

Behavior and Temperament

Myopias etsukoae is a predatory ant with a well-developed sting ^[1]. Workers are likely active foragers that hunt individually rather than forming large raiding parties. Their relatively large eyes (about 20 ommatidia) suggest they rely on vision more than many other Myopias species. They are probably defensive of their nest and will sting if threatened or disturbed. The sting is described as long, sharp, and upcurved in the species description ^[1]. For handling, exercise caution, while the sting is not medically significant for healthy adults, it can cause discomfort. Escape prevention should be moderate, these medium-sized ants can climb smooth surfaces but are not extreme escape artists like some tiny species.

Colony Development

As a recently described species (2020), there is no established captive history for Myopias etsukoae. Expect slower colony growth than faster-growing genera like Lasius or Camponotus. Ponerinae colonies typically remain smaller, often under a few hundred workers. The first workers (nanitics) will likely be smaller than mature workers. Be patient, it may take several months to see significant growth after the founding stage. Monitor colony health through worker activity levels and brood production. If workers are active and brood is present, the colony is likely thriving.

Frequently Asked Questions

Report an Issue

The current care sheet is based fully on literature. See inconsistencies, or something that's incorrect? Please report here, it will be resolved after review from an admin. Contributing to the blogs tab also helps providing information, to make us be able to further improve the caresheets. Thank you for your support!

References