Apterostigma callipygium

Quick Summary

• Difficulty: Expert
• Origin & Habitat: Colombia and Ecuador, tropical lowland forests ^[1][2][3]
• Colony Type: Unknown, colony structure unconfirmed
• Size & Growth:
  • Queen: size data unavailable
  • Worker: size data unavailable
  • Colony: Unknown, likely small to moderate based on genus patterns
  • Growth: Slow
  • Development: Estimated 8-12 weeks based on related Attini species at 25°C (Timeline is unconfirmed, development depends heavily on fungal garden health)
• Antkeeping:
  • Temperature: Keep warm and stable, around 24-28°C. Because they come from tropical Colombia and Ecuador ^[1][2], they cannot tolerate cold or fluctuation.
  • Humidity: High humidity,70-80%. Keep the nest substrate damp to support their fungal garden.
  • Diapause: No, tropical species do not hibernate
  • Nesting: Requires specialized fungus garden setup with space for decaying plant material and garden expansion
• Behavior: Peaceful and slow-moving, focused on garden maintenance. Escape risk is low to moderate for small Attini if proper barriers are used.
• Common Issues: fungus garden contamination or failure, this is the primary cause of colony death in fungus-growing ants., insufficient humidity causing garden desiccation and collapse., incorrect substrate for fungal growth, must provide appropriate decaying plant material or insect frass., difficulty obtaining founding queens with viable fungus starter culture.

Fungus Garden Requirements

As Attini (fungus-growing ants), Apterostigma callipygium requires a living fungal garden to survive ^[3]. The ants cultivate fungus on decaying plant material or insect frass. You must provide appropriate substrate such as sterilized leaf litter or decaying wood, and maintain high humidity to prevent the garden from drying out. Contamination by mold or mites is the most common cause of colony failure. The specific fungal species cultivated by Apterostigma callipygium is unknown, but related Apterostigma species use insect frass and plant debris.

Temperature and Humidity

Keep your colony warm and stable. Because they naturally occur in tropical Colombia and Ecuador ^[1][2], room temperature in many homes may be too cool. Aim for 24-28°C with minimal fluctuation. High humidity is essential, keep the nest substrate damp but not waterlogged. If the garden dries out, the colony will die.

Feeding and Diet

Unlike most pet ants, you do not feed Apterostigma callipygium directly with sugar water or insects. Instead, they eat fungus grown on substrate you provide. Offer small pieces of sterilized leaf litter, decaying wood, or insect frass (processed insect waste). The ants will chew this material and use it to grow their fungal garden, which serves as their sole food source. ^[3]

Colony Founding

Founding behavior is unconfirmed for this species. Based on typical Attini patterns, queens likely found colonies claustrally (sealing themselves in) with a small piece of fungus or substrate to start the garden. This means you should provide founding queens with a small starter fungus culture and a sealed chamber with high humidity.

Frequently Asked Questions

Report an Issue

The current care sheet is based fully on literature. See inconsistencies, or something that's incorrect? Please report here, it will be resolved after review from an admin. Contributing to the blogs tab also helps providing information, to make us be able to further improve the caresheets. Thank you for your support!

References