Myrmecina insulana

Quick Summary

• Difficulty: Medium
• Origin & Habitat: Southeast Asia, Malaysia (Malay Peninsula, Borneo/Sabah/Sarawak) and Indonesia (Sumatra, Java, Kalimantan). Inhabits soil and leaf litter in forested areas at elevations ranging from 560-1000m ^[1].
• Colony Type: Colony structure is unconfirmed for this species. Based on typical Myrmecina patterns, likely single-queen colonies.
• Size & Growth:
  • Queen: Undescribed, approximately 3-4mm inferred from genus patterns
  • Worker: 2.2-2.4mm ^[1]
  • Colony: Likely remains small, estimated under 100 workers based on similar litter-dwelling Myrmecina species
  • Growth: Likely slow to moderate
  • Development: Estimated 6-10 weeks at optimal temperature based on related Myrmicinae species (No direct development data exists for this species. Estimates based on genus-level patterns for small Myrmicinae.)
• Antkeeping:
  • Temperature: Keep around 22-26°C. Being a tropical species from Southeast Asia, they prefer warm conditions. A gentle gradient allowing them to move between warmer and cooler areas is ideal.
  • Humidity: High humidity preferred, these are litter-dwelling ants that naturally experience damp conditions. Keep substrate consistently moist but not waterlogged. Provide a humid outworld.
  • Diapause: Not required, being a tropical species from Southeast Asia, they do not need formal hibernation. However, they may slow down during cooler periods.
  • Nesting: Y-tong (AAC) nests or test tube setups work well for their tiny size. Provide moist substrate (soil/peat mix) that they can tunnel through. Their natural habitat is soil and litter, so a naturalistic setup with fine substrate is ideal.
• Behavior: Very small and docile ants. Workers are slow-moving and not aggressive. They likely forage in the litter layer, searching for tiny prey and honeydew. Escape prevention is critical due to their minute size, they can squeeze through standard test tube barriers. Use fine mesh and tight-fitting lids. Their small eyes (10-11 ommatidia) suggest they rely more on chemical trails than visual cues ^[1].
• Common Issues: escape prevention is critical due to their extremely tiny size, standard barriers may not contain them, limited available information makes care recommendations uncertain, slow colony growth may frustrate beginners expecting rapid development, wild-caught colonies may be difficult to locate due to their minute size and litter-dwelling habit, high humidity requirements can lead to mold issues if ventilation is poor

Housing and Nest Setup

Due to their extremely small size (under 2.5mm), Myrmecina insulana requires careful housing considerations. A Y-tong (AAC) nest with narrow chambers or a test tube setup works well for founding colonies. The chambers should be appropriately scaled, these tiny ants don't need large spaces. Provide a moist substrate (a mix of soil and peat works well) that allows for tunneling. Because they naturally live in soil and leaf litter, a naturalistic setup with a thin layer of moist substrate is ideal. The outworld should also be humid, you can achieve this by misting regularly or using a water reservoir. Escape prevention is critical: use fine mesh (at least 0.5mm or smaller) on all ventilation holes and ensure lids fit tightly. These ants can squeeze through gaps that would hold back larger species. ^[1]

Feeding and Diet

As tiny litter-dwelling ants, Myrmecina insulana likely feeds on small prey and honeydew in the wild. In captivity, offer small protein sources such as flightless fruit flies, pinhead crickets, or tiny pieces of mealworms. Given their minute size, prey items should be appropriately scaled, even small fruit flies may need to be cut up initially. They likely also accept sugar sources (honey water, sugar water) though this should be offered in very small amounts in a shallow container to prevent drowning. Feed small amounts every 2-3 days and remove any uneaten food promptly to prevent mold. Since colony size remains small, overfeeding is a common mistake to avoid.

Temperature and Humidity

Myrmecina insulana comes from tropical Southeast Asia, so warm and humid conditions are essential. Maintain temperatures in the range of 22-26°C. A heating cable on one side of the nest can create a temperature gradient, allowing the ants to self-regulate. Place the heating on top of the nest, not underneath, to avoid drying out the substrate too quickly. Humidity should be high, these are forest floor ants that naturally experience damp conditions. Keep the nest substrate consistently moist but not waterlogged. The outworld should also be humid, mist as needed or provide a water reservoir. Poor ventilation can lead to mold problems, so ensure adequate airflow while maintaining humidity. ^[1]

Colony Development

This species was described in 2020,so there is no published data on captive colony development. Based on typical patterns for small Myrmicinae, expect slow growth. The first workers (nanitics) will likely be very small and may take 6-10 weeks to develop from egg to worker at optimal temperature. Colony size will likely remain modest, probably under 100 workers even in mature colonies. This is not a species for antkeepers seeking rapid colony growth. Instead, the appeal lies in observing the behavior of these tiny, docile ants going about their daily activities. Be patient with founding colonies and avoid disturbing them unnecessarily. ^[1]

Behavior and Temperament

Myrmecina insulana is a docile, non-aggressive species. Workers are slow-moving and spend most of their time foraging in the litter layer. Their very small eyes (only 10-11 ommatidia) suggest they rely primarily on chemical signals rather than vision ^[1]. They are not known to sting and pose no danger to keepers. The main behavioral concern is their escape ability, despite being tiny, they are adept at finding and squeezing through minute gaps. Always use excellent escape prevention. Colony structure is unconfirmed, though single-queen colonies are typical for the genus.

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