Pheidole sphaerica

Quick Summary

• Difficulty: Expert
• Origin & Habitat: Known only from Huila, Colombia, specifically St. Augustin ^[1][2]. The habitat is unrecorded, but Pheidole species in Colombia often nest in soil or decaying wood in tropical forests ^[1].
• Colony Type: Unconfirmed, no colony samples have been studied. Most Pheidole species are single-queen, but some are multi-queen, without data, the structure is unknown.
• Size & Growth:
  • Queen: Size data unavailable, no queens have been collected or described
  • Worker: Size data unavailable, only head measurements for majors are known, and minor workers have never been collected ^[2]
  • Colony: Unknown, no colony data exists
  • Growth: Unknown
  • Development: Unknown, no breeding documented. Based on typical Pheidole patterns from similar climates, it may take 4-8 weeks at tropical temperatures, but this is an estimate (Development is likely temperature-dependent, but no specific data exists)
• Antkeeping:
  • Temperature: Likely needs warm conditions similar to other Colombian Pheidole. Start around 24-28°C with a gradient, and observe activity to adjust
  • Humidity: Likely requires moderate humidity typical of forest habitats. Keep nest substrate consistently moist but not waterlogged, with some drier areas
  • Diapause: Unknown, no seasonal data. Given tropical origin, true hibernation may not be needed, but cooler periods might slow activity
  • Nesting: No specific data. Based on genus patterns, likely nests in soil or rotting wood. In captivity, use Y-tong (AAC) or plaster nests with moisture chambers
• Behavior: Unknown, no observations exist. Based on genus patterns, majors may defend the colony, but this is unconfirmed. Escape risk is moderate due to climbing ability, but size is unknown. Assume defensive behavior until proven otherwise
• Common Issues: this species has never been kept in captivity, there are no established care protocols, no information exists on diet or feeding methods, minor workers are undescribed, making colony structure unclear, without nuptial flight data, captive breeding may be difficult, all care advice is inferred and may not match actual needs

Why This Species Is So Challenging

Pheidole sphaerica is one of the most poorly documented ant species. Only major workers have been collected from a single location in Colombia ^[2]. This means every aspect of captive care, from diet to reproduction, is unknown. For this reason, it is recommended only for experienced antkeepers comfortable with experimentation ^[1][2].

Appearance and Identification

Major workers have a large spherical head, proportionally reduced clypeus and mandibles, and light reddish yellow coloration ^[2]. Only majors are known, minor workers and queens have never been collected ^[2]. Body size data is unavailable, as only head measurements are documented ^[2].

Housing and Nesting

No natural nesting observations exist. Based on genus patterns, Pheidole species in Colombia nest in soil or decaying wood ^[1]. In captivity, use Y-tong (AAC) or plaster nests with moisture chambers. Maintain warm temperatures around 24-28°C and moderate humidity, inferred from tropical origin.

Feeding and Diet

No feeding observations exist. Pheidole species vary in diet, from seed-eating to predatory. The enormous head of majors suggests possible seed processing, but this is speculative. In captivity, offer sugar water, small insects, and seeds, then observe acceptance.

Colony Establishment and Reproduction

No information on nuptial flights or founding. Most Pheidole are claustral, but this is unconfirmed for sphaerica. If a queen is obtained, provide a test tube setup with moisture and warmth, but success is uncertain.

Frequently Asked Questions

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References