Recurvidris williami

Quick Summary

• Difficulty: Expert
• Origin & Habitat: Flores Island, Indonesia (Lesser Sunda Islands), tropical evergreen forest ^[1]
• Colony Type: Unconfirmed, colony structure not documented in any scientific literature
• Size & Growth:
  • Queen: Unknown, queens have not been described in available sources
  • Worker: Small, exact measurements not documented in available sources
  • Colony: Unknown, no colony size data exists
  • Growth: Unknown, no development data exists
  • Development: Unknown, no direct measurements. Based on typical tropical Myrmicinae, a rough estimate is 6-10 weeks at 24-28°C, but this is speculative. (No species-specific development data. Related Recurvidris species from Thailand suggest general Myrmicinae patterns ^[2].)
• Antkeeping:
  • Temperature: Tropical species, aim for 24-28°C based on native habitat. Use a heating cable on one side of the nest to create a gradient if room temperature is cooler ^[1].
  • Humidity: Forest floor species from a tropical environment, keep nest substrate moderately moist but not waterlogged. Provide a humidity gradient with a moist nesting area and drier foraging zone.
  • Diapause: Unknown, no data on overwintering. As a tropical species from Flores Island, they likely do not require true hibernation, but may slow down during cooler periods.
  • Nesting: Natural nesting is in soil or rotting wood in tropical evergreen forest. For captivity, a small test tube setup or Y-tong nest with small chambers works well. Keep the nesting area humid.
• Behavior: Behavior is poorly documented. As a Myrmicinae species, they have a functional stinger and use a 'smear' defense, they wipe venom onto enemies rather than piercing. Their tiny size means escape prevention is critical: use fine mesh and tight lids. No specific aggression data exists, but related Crematogastrini are usually non-aggressive.
• Common Issues: lack of available care information makes proper husbandry challenging, colony size and growth rate are unknown, making feeding schedules uncertain, wild-caught colonies may carry parasites with no documented treatments, tropical humidity needs can cause mold if ventilation is poor, very small size requires excellent escape prevention regardless of temperament

Species Identification and Morphology

Recurvidris williami workers are identified by their unique mandible: the chewing edge has five teeth, and the fifth tooth is distinctly larger and acute or split ^[2]. The top back part of the head is rough with a network-like texture ^[2]. There's also a narrow ridge linking the propodeal spine to the metapleural lobe ^[2]. These features separate Recurvidris from other Myrmicinae ^[1].

Natural Distribution and Habitat

Recurvidris williami is only known from Flores Island in the Lesser Sunda Islands, Indonesia ^[1]. The type location is Nangagete, about 60 km east of Maumere, collected in tropical evergreen forest ^[1]. No other collection records exist.

Housing and Nest Setup

Because no captive data exists, all recommendations are based on general tropical Myrmicinae care. Start with a small test tube setup: water reservoir separated by cotton, kept humid. Once a small colony forms (a few workers), you can consider moving to a Y-tong or plaster nest with tiny chambers. Keep the nest humid but provide ventilation to prevent mold. A small outworld for foraging will let you observe and feed them.

Feeding and Diet

The diet of Recurvidris williami is unstudied. Based on related Myrmicinae, offer both protein and sugar. For protein, provide small prey like fruit flies, pinhead crickets, or small mealworms. For sugar, offer honey water or sugar water. Offer small amounts and see what they take. Remove uneaten prey after 24-48 hours to avoid mold. Feed every 2-3 days once a colony is established, adjusting as needed.

Temperature and Seasonal Care

As a tropical species from Flores Island, keep them warm: 24-28°C ^[1]. Use a heat cable on one side of the nest for a gradient if your room is cooler. Avoid exceeding 30°C. No hibernation data exists, they likely stay active year-round if kept warm. If activity drops, slightly lower temperatures may mimic natural cycles, but avoid cold exposure.

Colony Development and Expectations

No development timeline is known for this species. Based on small tropical Myrmicinae, estimate 6-10 weeks from egg to first worker at 24-28°C, but this is a rough guess. Mature colony size is completely unknown. The first workers (nanitics) will be smaller than later ones. Do not disturb the queen during founding. Growth will likely be slow due to lack of information, focus on stable conditions and appropriate feeding rather than expecting fast colony growth.

Frequently Asked Questions

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References