Pheidole guajirana

Quick Summary

• Difficulty: Easy
• Origin & Habitat: Northern South America, Colombia (La Guajira, Magdalena), Venezuela, and Brazil (near Manaus). Found in rainforest and tropical dry forest at elevations up to 200m, typically nesting in wet trunks, rotten wood, or sand near rivers ^[2][1][3].
• Colony Type: Unconfirmed, no specific literature on queen number, but based on Pheidole genus patterns, likely single-queen colonies.
• Size & Growth:
  • Queen: Size data unavailable, inferred from Pheidole genus to be approximately 5-6 mm total length
  • Worker: Size data unavailable, inferred to be small, with majors having larger heads for defense, approximately 2-4 mm total length based on genus patterns
  • Colony: Up to several hundred workers, estimated based on typical Pheidole species
  • Growth: Moderate, inferred from tropical species
  • Development: Estimated 6-8 weeks at optimal temperatures, inferred from related small Myrmicinae (Development time is faster in warm conditions)
• Antkeeping:
  • Temperature: Keep at 24-28°C, inferred from tropical habitat ^[3]
  • Humidity: Keep nest substrate consistently moist but not waterlogged, as they inhabit wet wood near rivers ^[3].
  • Diapause: No, as a tropical species, they do not require hibernation.
  • Nesting: Prefer dark, humid nests with small chambers. Y-tong or plaster nests work well ^[3].
• Behavior: Workers are active foragers and aggressive defenders. Majors act as soldiers with strong mandibles. Defense includes biting and formic acid release, as typical for Myrmicinae. Their small size requires excellent escape prevention.
• Common Issues: escape prevention is critical due to tiny size, overheating can kill them quickly, dry conditions cause colony decline, mold can be a problem in overly humid setups, wild-caught colonies may have parasites

Nest Preferences and Setup

In the wild, Pheidole guajirana nests in wet rotting wood and small cavities near rivers, with excessively small nest entrances ^[3]. For captive care, provide a nest that maintains high humidity while allowing some ventilation. Y-tong (AAC) nests or plaster nests work well because they hold humidity consistently. Keep the nest in a dark area, as these ants prefer dim conditions. A water tube attached to the nest helps maintain humidity. Place the setup away from direct sunlight and drafts.

Feeding and Diet

Pheidole guajirana is a generalist feeder. Workers forage actively on riverbank soil and are attracted to protein baits ^[3]. In captivity, offer a varied diet: protein sources like small insects, and sugar sources like honey water. Feed protein 2-3 times per week, and keep sugar water available at all times. Remove uneaten prey after 24 hours to prevent mold. Given their tiny size, food items should be appropriately small.

Temperature and Seasonal Care

As a tropical species, Pheidole guajirana needs warm conditions year-round. Keep the nest area at 24-28°C. This is typical room temperature in many homes, but you may need a heating cable during cooler months. Create a temperature gradient so ants can move between warmer and cooler areas. They do not require hibernation. Avoid temperature fluctuations and cold drafts.

Behavior and Colony Structure

This species has major and minor workers. Majors have enlarged heads for defense and seed processing. Minors handle foraging and nursing. Workers are aggressive defenders and will bite and release formic acid when threatened. Their small size means they are quick foragers. Watch for major workers patrolling the foraging area. ^[1][3]

Growth and Development

Colony growth is moderate for a small tropical ant. The queen lays eggs that develop through larval stages before emerging as workers. First workers are typically smaller but grow as the colony feeds them. Larger majors appear as the colony expands. Expect the colony to reach several hundred workers within the first year under good conditions.

Frequently Asked Questions

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References