Aretidris clousei

Quick Summary

• Difficulty: Expert
• Origin & Habitat: Philippines (Luzon Island), montane secondary forest at 900m elevation ^[1]
• Colony Type: Unknown, only worker caste described
• Size & Growth:
  • Queen: Unknown, no queens described ^[1]
  • Worker: 4.6-4.8 mm total length ^[1]
  • Colony: Unknown, likely small based on leaf litter specialization
  • Growth: Unknown
  • Development: Unknown, no data available ^[1] (No queens or brood development have been described for this species)
• Antkeeping:
  • Temperature: Likely 22-24°C based on 900m montane habitat, start here and observe colony response
  • Humidity: Likely high humidity required, keep nest material damp like forest leaf litter
  • Diapause: Unknown, tropical montane species may slow in cooler months but this is unconfirmed
  • Nesting: Likely small chambers with leaf litter and soil substrate, naturalistic setup required
• Behavior: Solitary diurnal foragers in leaf litter, escape risk is moderate due to small size. Defense mechanism is smear type (typical of Myrmicinae Crematogastrini).
• Common Issues: only workers are known, founding a colony requires collecting an entire nest from nature including an undescribed queen., montane origin at 900m means they may be sensitive to temperatures above 26°C., leaf litter specialists require specific microhabitat conditions that are difficult to maintain in standard formicaria., extreme rarity in captivity means care information is largely unavailable and mistakes are likely.

Natural History and Habitat

Aretidris clousei comes from the mountains of Luzon Island in the Philippines. The type specimens were collected at 900 meters elevation in Bulusan Volcano Natural Park, specifically in secondary forest near Aguingay Lake ^[1]. All specimens came from leaf litter sifted from the forest floor ^[1].

The habitat is montane secondary forest, which suggests cooler and more stable conditions than lowland tropical forests. The elevation of 900 meters creates a climate that is warm but not extremely hot, with high humidity from forest cover ^[1]. These ants forage during the day as individuals, hunting through the leaf litter rather than traveling in trails ^[1].

Housing and Nest Setup

Since these ants live in leaf litter, they need a naturalistic setup that mimics a forest floor. A standard formicarium with large chambers will not work for these small ants. Instead, use a naturalistic container with real leaf litter, soil, and small pieces of rotting wood.

The nest area should have small cavities appropriate for 4.6-4.8 mm ants. You can create this with flat stones, bark pieces, or by packing leaf litter into a container with small gaps. Keep the substrate consistently damp but not waterlogged, it should feel like fresh forest litter after rain.

Because they forage individually, they do not need large outworlds, but they do need complex ground cover to explore. A shallow container with leaf litter and soil works better than a tall outworld. ^[1]

Temperature and Environment

These ants come from 900 meters elevation in the tropics, which suggests they prefer moderate temperatures. While lowland Philippine ants often need 26-28°C, montane species at this elevation likely prefer cooler conditions around 22-24°C.

Start at 22-24°C and watch the colony. If workers move slowly and cluster together, they may need more heat. If they scatter and appear stressed, reduce the temperature. Avoid letting them get above 26°C for extended periods, as montane species often cannot handle heat stress.

Humidity should remain high. The leaf litter habitat suggests they need moist conditions with good air exchange, not stagnant wet air, but consistently damp substrate. ^[1]

Feeding and Diet

These ants forage individually in leaf litter, which suggests they hunt small prey items rather than recruiting to large food sources ^[1]. In captivity, offer small live prey appropriate for 4.6-4.8 mm ants, springtails, small fruit flies, or tiny insect pieces.

Since they forage alone, place food items scattered through the enclosure rather than in one feeding dish. They may not use liquid feeders prominently, but you can offer small drops of honey water on stones or leaves to see if they accept it.

Remove uneaten prey quickly to prevent mold in the humid leaf litter environment. Because they are leaf litter specialists, they may also benefit from decaying plant matter and soil microorganisms, though this is unconfirmed.

The Queen Problem

The biggest obstacle to keeping Aretidris clousei is that no queens have ever been described ^[1][2]. All known specimens are workers. This means you cannot start a colony from a single queen as you would with most ants.

To keep this species, you would need to collect an entire colony from nature, including the queen (which would be undescribed and difficult to identify). Even then, the colony might not adapt to captivity.

Because of this, Aretidris clousei is essentially unavailable to antkeepers except as individual workers collected from the wild, which cannot establish a colony. Wait for queens to be described and documented before attempting to keep this species.

Frequently Asked Questions

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References