Podomyrma femorata

Podomyrma femorata

Podomyrma femorata is a small to medium-sized Myrmicinae ant native to the Australasian region, found throughout Australia, New Guinea, and Indonesia (including the Aru Islands). Workers are typically dark brown with lighter colored segments, and show some size variation even within the same colony ^[1]. The species was originally described by Frederick Smith in 1859 from specimens collected on the Aru Islands, with the synonym Podomyrma femorata later recognized as the same species. This ant belongs to the Crematogastrini tribe and remains relatively unstudied in both the wild and in captivity.

Quick Summary

• Difficulty: Unknown, likely Medium
• Origin & Habitat: Native to the Australasian region spanning Australia, New Guinea, and Indonesia. The species inhabits tropical to subtropical environments, likely in forested areas where it nests in soil or rotting wood ^[1][2].
• Colony Type: Colony structure is unconfirmed. Like many Myrmicinae, likely single-queen (monogyne) colonies, though this has not been directly studied.
• Size & Growth:
  • Queen: Unconfirmed, estimated 6-8mm based on genus patterns
  • Worker: Unconfirmed, estimated 3-5mm based on genus patterns
  • Colony: Unknown, likely several hundred workers based on typical Podomyrma colony sizes
  • Growth: Unknown
  • Development: Unconfirmed, estimated 6-10 weeks based on typical Myrmicinae development at tropical temperatures (No direct development data exists for this species. Estimates based on genus-level patterns for similar tropical Myrmicinae ants.)
• Antkeeping:
  • Temperature: Keep at 24-28°C as a starting point. This range reflects their tropical/subtropical origin in Australia, New Guinea, and Indonesia. Adjust based on colony activity, if workers become sluggish, slightly increase temperature, if they avoid heated areas, reduce slightly.
  • Humidity: Maintain moderate to high humidity (60-80%). Their natural habitat includes tropical forests, so the nest substrate should remain consistently moist but not waterlogged. Provide a water tube for drinking access.
  • Diapause: Unconfirmed, Australian populations may experience reduced activity during cooler months, but true hibernation is unlikely given their tropical origin. Consider a slight temperature reduction (by 3-5°C) during winter months if the colony shows reduced activity.
  • Nesting: In the wild, they likely nest in soil or rotting wood in forested areas. In captivity, a Y-tong (AAC) nest or plaster nest with moisture retention works well. Provide a connection to an outworld for foraging. Given their small size, ensure escape prevention is adequate, they can squeeze through surprisingly small gaps.
• Behavior: Behavior is not well-documented for this species. Based on genus patterns, they are likely generalist foragers that scavenge and hunt small invertebrates. They are probably not aggressive toward keepers but may defend their nest if threatened. Their small size means escape prevention is important, use fine mesh barriers and ensure any connections between nest and outworld are secure. Activity level is likely moderate, with workers foraging individually or in small groups.
• Common Issues: limited information makes care requirements uncertain, start with typical tropical ant conditions and adjust based on colony response, escape prevention is critical due to their small size, they can slip through tiny gaps in equipment, wild-caught colonies may carry parasites or diseases that can cause colony failure in captivity, slow growth or lack of development may indicate incorrect temperature or humidity, observe worker behavior to guide adjustments, overfeeding can lead to mold problems in enclosed nests, remove uneaten food promptly

Getting Started with Podomyrma femorata

This species remains one of the less-documented ants in the hobby, which means you'll be somewhat of a pioneer. Start with a queen caught during nuptial flights (timing is unknown but likely during warm summer months in their range) or a small colony from a knowledgeable keeper. For founding queens, use a standard test tube setup with a water reservoir, the queen will likely seal herself into a chamber and raise her first brood alone. Once workers emerge (expect 6-10 weeks at warm temperatures), you can connect the test tube to a small outworld. Given the limited species-specific information, closely observe your colony's behavior, workers that cluster near heat sources indicate they want it warmer, while avoiding heated areas suggests the temperature is too high.

Housing and Nest Setup

A Y-tong (acrylic) nest or plaster nest works well for this species, as both retain moisture effectively. The nest chambers should be appropriately sized for workers in the 3-5mm range, not too large or the ants may feel exposed, but spacious enough for colony expansion. Connect the nest to an outworld (foraging area) using a short tube. Use a water tube or hydration system that allows the nest substrate to draw moisture gradually. Because of their small size, pay extra attention to escape prevention, check all connection points and consider using fine mesh on any ventilation holes. A small piece of sponge at the outworld entrance can help with humidity while still allowing some airflow.

Feeding and Nutrition

Like most Myrmicinae, Podomyrma femorata is likely a generalist that accepts both sugar sources and protein. Offer sugar water (1:1 ratio) or honey as an energy source, refreshed every few days. For protein, small insects like fruit flies, pinhead crickets, or mealworm pieces work well. Feed protein every 2-3 days, adjusting based on how quickly the colony consumes it. Remove any uneaten prey after 24-48 hours to prevent mold. Since this species isn't well-documented in captivity, be prepared to experiment, if they ignore a particular food, try alternatives. Fresh fruit (like apple or banana slices) may also be accepted. Always ensure clean water is available.

Temperature and Seasonal Care

Maintain temperatures between 24-28°C for optimal colony development. A small heating cable on one side of the nest can create a gentle gradient, allowing ants to regulate their own temperature by moving between warmer and cooler areas. Place the heat source on top of the nest rather than underneath to avoid drying out the substrate too quickly. During winter or cooler months, a slight reduction of 3-5°C is acceptable if the colony naturally becomes less active, but avoid cold temperatures below 18°C for extended periods. Monitor water condensation in the nest, excessive condensation can indicate too much heat or humidity, while complete drying out suggests more moisture is needed.

Observing and Understanding Your Colony

Because this species isn't commonly kept, your observations contribute to our collective knowledge. Watch for patterns in worker behavior: active foraging indicates contentment with conditions, while sluggish or lethargic workers may suggest temperatures are too low. Note how quickly they consume different foods, when they are most active (some ants are more active at certain times of day), and how they respond to disturbances. Take photos of workers, queens, and brood stages if possible, these can help with identification and contribute to citizen science. If your colony thrives, consider sharing your experience with the antkeeping community so others can learn from your success.

Frequently Asked Questions

References