Temnothorax chandleri

Quick Summary

• Difficulty: Expert
• Origin & Habitat: Endemic to California, USA. Found in riparian woodland along lakes and sloughs, plus oak leaf litter in damp areas. Type series from Samson Slough, Tehama County, another collection from a rotten log in riparian woodland ^[2][1].
• Colony Type: Unknown, no queens or colony structure have been documented. Based on related Temnothorax, likely small, single-queen colonies.
• Size & Growth:
  • Queen: No queens known for this species ^[1]
  • Worker: Size data unavailable, total length not documented. Head width is about 0.53-0.62 mm ^[1], but that's not body size.
  • Colony: Unknown. Related Temnothorax form colonies of up to a few hundred workers, but actual size for this species is unconfirmed.
  • Growth: Unknown, likely moderate if typical of small Temnothorax
  • Development: Unknown, estimated 6-10 weeks based on related species at warm temperatures (No direct data exists for this species.)
• Antkeeping:
  • Temperature: Keep around 20-24°C, typical room temperature. It comes from a temperate region with mild winters, avoid overheating above 28°C.
  • Humidity: High humidity is needed, this species lives in damp leaf litter and rotting wood near water. Keep the nest substrate consistently moist but not waterlogged, and provide a humidity gradient so the ants can choose their preferred spot ^[2].
  • Diapause: Likely yes, its temperate origin suggests a winter rest. If you choose to provide one, aim for 2-3 months at 10-15°C, but specific requirements are unconfirmed.
  • Nesting: Use a small nest that holds moisture well, like a Y-tong (AAC) nest with tight chambers, or a test tube setup with a water plug. Add bits of rotting wood or leaf litter to mimic the natural habitat. Keep the nest dark and humid ^[2][1].
• Behavior: Docile and non‑aggressive, typical of the genus. They won't bother humans. Their defense uses a modified flattened stinger to smear venom onto attackers instead of stinging. Because they are so tiny, escape proofing is critical: use fine mesh and seal every gap.
• Common Issues: escape is a big risk, these ants are so small they can slip through nearly any gap, use fine mesh and seal everything., captive husbandry is undocumented, you'll be figuring things out from scratch., high humidity can cause mold if ventilation is poor, balance moisture with airflow., getting hold of a colony is extremely hard, only a handful of collections exist., no queens have ever been found, so raising a colony from a mated queen is impossible today.

Housing and Nest Setup

Temnothorax chandleri needs a small, humid nest. A Y‑tong (AAC) nest with narrow chambers works well, or you can use a simple test tube setup with a water reservoir. The nest must stay dark and consistently moist, not waterlogged. Add a little rotting wood or oak leaf litter from its natural habitat to make it feel at home ^[1][2]. Because the ants are so small, avoid large open spaces, tight tunnels and small chambers help them feel secure. Ensure good ventilation to stop mold from taking over the damp nest.

Feeding and Diet

Feeding preferences aren't directly known, but based on related Temnothorax, these ants likely hunt small live prey and collect honeydew. Offer tiny insects like fruit flies, springtails, or pinhead crickets. A small drop of honeywater or sugar water can supplement their diet. Feed small amounts every few days and remove uneaten food quickly to avoid mold. All prey should be smaller than the ants themselves. ^[1]

Temperature and Seasonal Care

Keep the nest at a steady 20-24°C, normal room temperature is fine. Avoid temperatures above 28°C, which could stress the colony. Because the species comes from California's mild, temperate climate, a winter diapause of 2-3 months at 10-15°C is likely beneficial, though not proven. Place the nest away from direct sunlight and heating vents to keep conditions stable ^[2].

Obtaining Colonies

This is the hardest part, Temnothorax chandleri is known from only a handful of sites in California and is almost never available in the ant trade. If you live in its range (Tehama County, etc.), you could try searching for nests in damp leaf litter or rotten wood along sloughs and lake edges, but expect a long search. Any wild‑caught colony might be stressed or carry parasites. Since no queens have ever been found, you'd need to collect a complete colony. Be ready for a lot of trial and error ^[2][3].

Defense and Handling

Like other ants in the tribe Crematogastrini, Temnothorax chandleri uses a 'smear' defense: they have a modified, spatulate stinger that wipes venom onto attackers instead of piercing. But they are completely harmless to humans, too small and docile to be a problem. You can handle them safely with a soft brush or aspirator. The real risk is losing them through tiny cracks.

Frequently Asked Questions

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References