Ponera alisana

Quick Summary

• Difficulty: Medium
• Origin & Habitat: Native to Taiwan (Chiayi County: Fenchihu at ~1400 m) and Japan (Yakushima Island in laurel forests at 180-280 m elevation) ^[1][2].
• Colony Type: Likely monogyne (single queen) based on typical Ponera genus patterns, but colony structure is unconfirmed for this species.
• Size & Growth:
  • Queen: ~3.8 mm total length ^[2].
  • Worker: ~3.3 mm total length ^[1][2].
  • Colony: Unknown. Based on typical Ponera genus patterns, colonies are small, likely reaching a few dozen to a few hundred workers.
  • Growth: Unknown, likely slow to moderate based on genus patterns.
  • Development: Unconfirmed, no direct observations. Based on typical Ponera patterns, expect 6-10 weeks at optimal temperature. (Development is unconfirmed, related species typically take 6-10 weeks from egg to worker at warm temperatures.)
• Antkeeping:
  • Temperature: Aim for 20-26°C, as this species is found in warm subtropical to temperate forests. Start in the low-mid 20s and observe colony activity for adjustments.
  • Humidity: Keep the nest substrate consistently moist but not waterlogged, as they inhabit humid forest environments. Provide a water source like a shallow dish or damp cotton.
  • Diapause: Unknown for this species. Based on genus patterns from temperate regions, a cool period of 10-15°C for 2-3 months during winter may be beneficial.
  • Nesting: Natural nesting occurs in rotting wood, under stones, or in soil. In captivity, use a test tube setup for founding colonies. For established colonies, Y-tong (AAC) or plaster nests with small chambers work well. Keep the nest dark and undisturbed.
• Behavior: Ponera alisana is cryptic and likely forages at night or in dim light. They are predatory on small invertebrates and are not aggressive toward keepers. Their small size means any sting is negligible to humans. Escape prevention is important due to their size, use standard barriers.
• Common Issues: biology is completely unstudied, so care is based on genus patterns rather than species-specific data, colony growth may be slow, avoid overfeeding or disturbing the colony during founding, humidity must be maintained, drying out is a common killer of Ponera colonies, wild-caught colonies may carry parasites that can devastate captive colonies, their small size makes them easy to lose track during colony transfers

Natural History and Distribution

Ponera alisana was described in 1986 from Taiwan and later found in Japan ^[1][2]. In Taiwan, specimens were collected at Fenchihu at about 1400 m elevation. In Japan, they inhabit laurel forests at 180-280 m ^[1]. The species has also been reported from mainland China. Nuptial flights may occur in summer, as type specimens were collected in August, but this is not well documented ^[1].

Identification and Distinguishing Features

Ponera alisana is a relatively large Ponera species. Key features include long antennal scapes that exceed the head margin, an acute medial tooth on the clypeus, and a strongly incised metanotal groove ^[2]. Japanese specimens show variation in scape length but are considered the same species ^[1].

Housing and Nesting

For founding colonies, use a test tube setup with a water reservoir and cotton plug. For established colonies, Y-tong or plaster nests with small chambers work well. Keep the nest humid but ventilated to prevent mold, and provide a dark, undisturbed environment ^[3].

Feeding and Nutrition

Ponera alisana is likely predatory on small invertebrates like springtails and fruit flies. Feed protein prey 2-3 times per week, removing uneaten items after 24 hours. Sugar sources may be accepted occasionally ^[3].

Temperature and Seasonal Care

Based on their habitat in warm forests, aim for 20-26°C. During winter, a cool period of 10-15°C for 2-3 months may benefit the colony, though this is inferred from genus patterns ^[1][2].

Colony Development and Growth

Colony development is unconfirmed. Based on typical Ponera patterns, founding may be claustral, with first workers emerging in 6-10 weeks. Colony growth is slow, with small colony sizes ^[3].

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