Rogeria nevadensis

Quick Summary

• Difficulty: Expert
• Origin & Habitat: Sierra Nevada de Santa Marta in Colombia and Venezuela. Found in montane wet forest and rain forest at 1300-1340m elevation ^[1][2].
• Colony Type: Unknown – only workers have been collected. No queen or male specimens have been documented ^[1].
• Size & Growth:
  • Queen: Unknown – queen has not been described ^[1].
  • Worker: 2.2-2.5mm ^[1].
  • Colony: Unknown – colony size not documented ^[1].
  • Growth: Unknown – no development data available.
  • Development: Unknown – development not studied. Based on similar tiny Myrmicinae, estimate 6-10 weeks at optimal temperature. (No direct data available, estimate based on genus-level patterns for small tropical Myrmicinae.)
• Antkeeping:
  • Temperature: Keep cool compared to typical tropical ants – aim for 18-22°C. Their natural montane habitat stays much cooler than lowland rainforest. Use a heating cable on one side of the nest to create a gentle gradient ^[1].
  • Humidity: High humidity is essential – they come from wet montane forest. Keep nest substrate consistently moist but not waterlogged. Think damp forest floor conditions year-round ^[1].
  • Diapause: Unknown – no data on overwintering requirements. Their high-elevation habitat may experience cooler seasonal temperatures, but true hibernation may not be necessary in captivity.
  • Nesting: In nature they nest in rotting logs and moist forest floor debris. In captivity, a small test tube setup or a small Y-tong nest works well. Keep chambers tight and appropriately scaled to their tiny size. Avoid large open spaces.
• Behavior: These ants are tiny and likely secretive. As predators in the Solenopsidini tribe, they probably hunt small invertebrates. Their very small eyes suggest they may rely more on chemical cues than visual navigation. Escape prevention must be excellent – their tiny size means they can squeeze through standard barriers. Handle with care as they possess a stinger, though given their minute size, the sting effect would be minimal for humans.
• Common Issues: tiny size makes escape likely without fine mesh barriers., no queen described – founding behavior is completely unknown., high humidity requirements can lead to mold if ventilation is poor., cool temperature needs may conflict with typical room temperatures., colony size unknown – difficult to plan long-term housing., no captive breeding data available – establishing a colony may be extremely difficult.

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References