Pheidole angulicollis

Quick Summary

• Difficulty: Medium
• Origin & Habitat: Borneo, Indonesia, and Malaysia, well-developed forests in lowlands and hill areas, nesting in soil under stones ^[1]
• Colony Type: Likely monogyne with major and minor worker castes, based on a colony with one dealate queen ^[1]
• Size & Growth:
  • Queen: Size data unavailable
  • Worker: Major: 2.6-3.6 mm, Minor: 1.3-2.4 mm ^[1]
  • Colony: Unknown, no specific data on colony size
  • Growth: Moderate
  • Development: 4-8 weeks, estimated from tropical Pheidole patterns (Development time may vary with temperature and feeding)
• Antkeeping:
  • Temperature: Keep warm, around 24-28°C, based on tropical habitat inference
  • Humidity: Keep nest substrate consistently moist but not waterlogged, as they nest in soil
  • Diapause: No, tropical species do not require hibernation
  • Nesting: In nature, nest in soil under stones. In captivity, use soil-based nests or Y-tong/plaster nests with small chambers ^[1]
• Behavior: Docile and not aggressive toward keepers. Major workers have stingers but rarely use them on humans. Escape risk is moderate due to small size, ensure tight-fitting lids and fine mesh barriers^[1]
• Common Issues: high humidity needs mean mold can develop if ventilation is poor, ensure adequate airflow, small size makes escape prevention important, use fine mesh and tight-fitting lids, wild-caught colonies may harbor parasites that can cause colony failure in captivity, slow initial growth during founding phase can lead to overfeeding by impatient keepers, tropical species may struggle if temperatures drop below 22°C for extended periods

Nest Preferences and Housing

Pheidole angulicollis naturally nests in soil under stones in Bornean forest habitats. In captivity, replicate this with a soil-filled container with flat stones on top for cover, or use a Y-tong or plaster nest with small chambers. Provide appropriately sized passages and chambers for these small ants. Keep the nest area dark to mimic underground conditions ^[1].

Feeding and Diet

This species is omnivorous. Offer protein sources like small insects twice weekly and a constant sugar source such as honey water. Seeds are part of their natural diet, provide small seeds for majors to process. Remove uneaten food after 24-48 hours to prevent mold.

Temperature and Seasonal Care

As a tropical species, keep temperatures around 24-28°C for optimal brood development. Use a heating cable on one side of the nest to create a gentle gradient. Avoid temperatures below 22°C for extended periods.

Behavior and Colony Structure

Colonies have distinct worker castes: majors with large heads and horns, and smaller minors. Minors handle foraging and brood care, while majors specialize in seed processing and defense. The queen is likely monogyne, and colonies start with her sealing herself in a chamber to raise the first brood ^[1].

Growth and Development

After egg-laying, larvae appear in 1-2 weeks and pupae shortly after. First workers emerge 4-8 weeks later, depending on temperature. The founding phase is critical, avoid disturbing the queen. Major workers typically appear when the colony reaches a certain size.

Frequently Asked Questions

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References