Pheidole arhuaca

Quick Summary

• Difficulty: Medium
• Origin & Habitat: Native to the Neotropical region, found across Colombia (Magdalena, Cundinamarca, Tolima), Brazil, Costa Rica, and Panama. The type colony was found under a dried cow pat in the Sierra Nevada de Santa Marta region of Colombia, suggesting they nest in open ground areas in tropical dry to moist forests ^[1][2][3].
• Colony Type: Unconfirmed, colony structure has not been specifically documented for this species.
• Size & Growth:
  • Queen: Size data unavailable, inferred from Pheidole genus patterns
  • Worker: Size data unavailable
  • Colony: Up to a few thousand workers, inferred from typical Pheidole colonies
  • Growth: Moderate, typical for tropical Pheidole species
  • Development: Estimated 6-8 weeks at tropical temperatures based on genus patterns (Development time is inferred from related Pheidole species, direct measurements for P. arhuaca are not available)
• Antkeeping:
  • Temperature: Keep warm, around low-to-mid 20s°C, based on their tropical distribution ^[2][3]. Provide a gentle heat gradient if needed.
  • Humidity: Provide a humidity gradient, mostly dry nest chamber with one small moist area, as they are found in relatively dry habitats ^[1].
  • Diapause: No, as a tropical species, they do not require hibernation ^[2][3].
  • Nesting: Test tubes work well for founding colonies. For established colonies, a Y-tong (AAC) or plaster nest provides appropriate chamber sizes. They nest in ground cavities in nature ^[1].
• Behavior: Pheidole arhuaca is generally calm and not aggressive toward keepers. They possess a functional stinger for defense from their subfamily Myrmicinae. Like all Pheidole, they have major workers with enlarged heads that serve as soldiers. Escape risk is moderate due to small size, ensure barriers are secure. They are primarily ground-nesting and establish clean nest and foraging areas.
• Common Issues: tiny minor workers can escape through standard cotton plugs, use fluon barriers or tight-fitting plugs., tropical species may struggle in cool rooms below 22°C, monitor with a thermometer., colonies may stagnate if fed too much sugar, balance protein and carbohydrates., major workers develop later than minors so early colonies may appear slow to grow., wild-caught colonies may carry parasites, quarantine and observe new colonies carefully.

Housing and Setup

For founding colonies, use a standard test tube setup with water and cotton plug. Once workers emerge, connect to a foraging area. For established colonies, a Y-tong or plaster nest works well, as they nest in ground cavities ^[1]. Ensure the nest has a humidity gradient with a moist area.

Feeding and Diet

Based on typical Pheidole patterns, they are likely omnivores that accept both protein and carbohydrate sources ^[1]. Offer protein-rich foods like small insects 2-3 times per week, and provide sugar water or honey constantly. They will also collect seeds. Remove uneaten protein to prevent mold.

Temperature and Seasonal Care

Keep them warm, around low-to-mid 20s°C, based on their tropical distribution ^[2][3]. Provide a gentle heat gradient if needed. They do not require diapause ^[2][3].

Behavior and Colony Structure

Pheidole arhuaca exhibits the classic Pheidole caste system with distinct major and minor workers ^[1]. Major workers serve as soldiers for defense, while minors handle daily tasks. They possess a functional stinger from their subfamily Myrmicinae. Based on typical patterns, they are crepuscular to nocturnal foragers.

Growth and Development

Colony founding behavior is unconfirmed for Pheidole arhuaca, but based on typical Pheidole patterns, queens may seal themselves in a chamber and lay eggs without foraging ^[1]. Development time to first workers is estimated at 6-8 weeks at tropical temperatures.

Common Keeping Problems

The most common issues relate to their small size and tropical requirements. Tiny minors can escape through standard cotton plugs, use fluon barriers. Overfeeding leads to mold, remove uneaten food. Cool temperatures slow growth. Wild-caught colonies may carry parasites. ^[1]

Frequently Asked Questions

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References