Temnothorax stollii

Quick Summary

• Difficulty: Medium
• Origin & Habitat: Guatemala, Central America, found at high elevations including Volcán de Agua at 14,000 feet elevation ^[1]. Nests in plant cavities such as hollow twigs and stems ^[2].
• Colony Type: Colony structure is unconfirmed for this species. Most Temnothorax are single-queen colonies, but specific data for T. stollii is lacking.
• Size & Growth:
  • Queen: 3.8 mm ^[1]
  • Worker: 3.0-3.5 mm ^[1]
  • Colony: Unknown for this species, typical Temnothorax colonies reach a few hundred workers
  • Growth: Moderate, based on typical genus patterns
  • Development: Estimated 6-10 weeks at optimal temperature, based on related species (No specific data exists for this species. Related Temnothorax species develop in 6-10 weeks at around 20-22°C.)
• Antkeeping:
  • Temperature: Cool conditions preferred, aim for 18-22°C. Being from high-altitude Guatemala, they do not tolerate heat well. Room temperature or slightly below is ideal
  • Humidity: Moderate humidity, keep nest substrate slightly moist but not wet. Provide a humidity gradient. Allow the nest to dry slightly between waterings
  • Diapause: Unknown, no data on diapause for this species. High-altitude tropical species may have reduced activity during cool/dry periods but not a typical winter diapause. Observe colony behavior and adjust.
  • Nesting: Plant cavity specialists, in captivity they do well in Y-tong nests with small chambers or naturalistic setups with small twigs/branches. Avoid large, open spaces ^[2]
• Behavior: Peaceful and inconspicuous foragers. They are not aggressive and typically avoid conflict. Workers are small and may be overlooked in the outworld. They forage individually rather than in trails. Escape risk is moderate due to their tiny size, use fine mesh barriers. They use a smear defense, applying venom by wiping rather than stinging.
• Common Issues: tiny size makes escape prevention critical, use fine mesh and tight seals, high-altitude origin means heat is a serious risk, keep away from direct sunlight and heating elements, overheating is the most common cause of death, watch for workers clustering away from heat, slow growth can frustrate beginners, colonies develop slowly over months, wild-caught colonies may have parasites or health issues specific to their native range

Housing and Nest Preferences

Temnothorax stollii are plant cavity nesters, meaning they naturally live in hollow twigs, stems, and similar small spaces ^[2]. In captivity, Y-tong (AAC) nests work well because the chambers can be made appropriately small. Naturalistic setups with small bamboo sections or artificial twig systems also work. Avoid large, open formicarium spaces, these tiny ants feel safer in tight, enclosed chambers. Use test tubes for founding colonies, but be aware that their small size means you may need cotton with smaller pores to prevent escapes.

Temperature Requirements

This is critical for keeping T. stollii successfully. They are native to high-altitude Guatemala (14,000 feet) and adapted to cool conditions, they do NOT tolerate heat well ^[1]. Keep the nest area at 18-22°C, which is often room temperature. Avoid placing the nest near windows with direct sunlight, heating cables, or any heat source. Signs of overheating include workers clustering away from the heat source, brood dying, or queens leaving the nest. This species thrives in cool, stable conditions.

Feeding and Diet

Like most Temnothorax species, T. stollii accepts a varied diet including small insects, honeydew, and sugar sources. Offer small prey like fruit flies, pinhead crickets, and small mealworms, sized for their tiny workers. Provide sugar water or honey occasionally, though acceptance varies. Feed small amounts 2-3 times per week, removing uneaten prey after 24 hours. Because they are solitary foragers, they do not form large food caches, so offer food more frequently than for larger colonies.

Winter Care and Diapause

Diapause requirements are unconfirmed for this species. Their origin in high-altitude tropical Guatemala suggests they may experience cooler, drier periods but not a classic temperate winter. If you notice reduced activity in your colony during cooler months, you can try cooling them gradually to 12-15°C for 6-8 weeks, but this is experimental. Ensure water is available during any cooling period. It is safer to maintain stable cool conditions year-round rather than risk heat stress.

Handling and Colony Maintenance

Due to their tiny size and peaceful nature, T. stollii requires careful handling. Avoid shaking or sudden movements that could injure the small workers. Escape prevention is critical, use fluon on container rims and fine mesh (at least 0.5 mm) on any ventilation. These ants can squeeze through surprisingly small gaps. Colony growth is slow, expect first workers (nanitics) to be smaller than normal workers. Do not disturb the queen during founding. Monitor for mold in test tube setups and provide fresh water sources as needed.

Frequently Asked Questions

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References