Polyrhachis aculeata

Quick Summary

• Difficulty: Unknown, no captive husbandry data available
• Origin & Habitat: Native to the Indomalaya region: India, Sri Lanka, and the Philippines, in tropical and subtropical environments ^[2][3].
• Colony Type: Unknown, colony structure has not been documented in scientific literature
• Size & Growth:
  • Queen: Size data unavailable, no total length measurements exist for queens
  • Worker: 6.4-6.8 mm ^[1][2]
  • Colony: Unknown, no colony size data available
  • Growth: Unknown, no development data available
  • Development: Estimated 6-10 weeks based on Polyrhachis genus patterns in tropical conditions (This is an inference from related species, not species-specific research)
• Antkeeping:
  • Temperature: As a tropical species, keep warm around 24-28°C, with room temperature (22-25°C) likely suitable. Provide a gentle gradient if possible
  • Humidity: Keep nest substrate moderately moist but not waterlogged, as tropical species require higher humidity
  • Diapause: Unknown, as a tropical species from low latitudes, they likely do not require true hibernation
  • Nesting: Based on genus patterns, they may prefer semi-arboreal setups with plant material, but specific data is lacking
• Behavior: Based on Polyrhachis genus patterns, workers are likely docile and non-aggressive, with moderate escape risk due to their size
• Common Issues: no biological data exists for this species, so care is pioneering, lack of husbandry guides means you must experiment carefully, tropical origin means sensitivity to temperature drops, keep warm, wild-caught colonies may have parasites with no documented treatment, very limited availability in the antkeeping hobby

Species Identification and Appearance

Polyrhachis aculeata is a distinctive species within the aculeata-group. Workers are 6.4-6.8 mm in total length, with long, slender pronotal spines more than twice as long as their basal width and relatively long dorsal petiolar spines ^[1][2]. The body is covered in numerous erect to semi-erect hairs, and the legs and base of the gaster are reddish-brown while the rest is dark ^[1][2]. The eyes are strongly truncate, meaning they appear cut off at the posterior edge ^[1][2].

Natural Distribution and Habitat

Polyrhachis aculeata is documented from India, Sri Lanka, and the Philippines, including Mindanao and Negros islands ^[2][3]. As a tropical to subtropical species, it inhabits warm, humid environments, though specific habitat details are lacking.

What We Don't Know - Research Gaps

This species has no published data on biology, including colony size, queen behavior, founding process, or diet. Care must be based on inferences from the Polyrhachis genus, such as potential arboreal nesting and claustral founding typical for Formicinae, but these are not confirmed for P. aculeata.

Housing and Nesting Recommendations

Based on genus patterns, a naturalistic setup with plant material may work, but specific data is lacking. Use standard test tubes for founding, and transition to larger nests as the colony grows. Keep temperatures warm and humidity moderate.

Feeding and Diet

Specific diet is unknown, but as an omnivorous Formicinae, they likely accept sugar sources and small insects. Offer sugar water and protein sources like fruit flies, and observe preferences.

Frequently Asked Questions

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References