Temnothorax chun

Quick Summary

• Difficulty: Medium
• Origin & Habitat: Yunnan Province, China, inhabits conifer-broadleaf mixed forest at 2000m elevation ^[1][2]
• Colony Type: Unconfirmed, colony structure has not been documented for this newly described species. Most Temnothorax species have single-queen colonies ^[2].
• Size & Growth:
  • Queen: Undescribed, no queen measurements published yet ^[1]
  • Worker: 3.1mm total length (holotype worker) ^[1]
  • Colony: Unknown, no colony size data available for this species
  • Growth: Unknown, likely moderate based on genus patterns
  • Development: Unconfirmed, typical Temnothorax species take 6-10 weeks from egg to worker at optimal temperature ^[2] (Estimate based on genus-level data for similar small Myrmicinae ants)
• Antkeeping:
  • Temperature: Keep roughly 20-24°C, these are mountain forest ants from 2000m elevation, so they prefer cooler conditions than tropical species ^[1]. Avoid overheating. Room temperature is likely suitable for most keepers.
  • Humidity: Moderate humidity, keep the nest substrate slightly moist but not waterlogged. Their natural habitat is a mixed forest with seasonal moisture ^[1]. Provide a moisture gradient so ants can choose their preferred spot.
  • Diapause: Likely yes, as a temperate/mountain species from Yunnan, they probably need a winter rest period ^[2]. Reduce temperature to 10-15°C for 2-3 months during winter.
  • Nesting: In captivity, small nests work well, test tubes, Y-tong (AAC) nests, or small 3D-printed formicariums. They naturally inhabit small cavities under stones or in rotting wood on the forest floor ^[2].
• Behavior: Calm and non-aggressive. As a member of the Crematogastrini tribe, they likely use a smear defense mechanism, applying venom with a flattened stinger rather than stinging, so they pose no danger to you. Their tiny size (3.1mm workers) means escape prevention is critical, they can squeeze through very small gaps. They forage on the ground in nature and will search for food in the outworld.
• Common Issues: newly described species means limited species-specific care information, expect some trial and error, small size makes escape prevention critical, use fine mesh and tight-fitting lids, high-elevation origin means they may not tolerate heat well, keep them cool, limited information on founding behavior, claustral founding is typical for the genus but not confirmed for this species, winter diapause is likely required but specific duration is unknown

Housing and Nest Setup

Because these ants are tiny (3.1mm workers), you'll need appropriately scaled housing. Their natural habitat is conifer-broadleaf mixed forest at 2000m elevation, where they nest under stones and in small cavities within rotting wood ^[1][2]. A test tube setup works well for founding colonies, use a small test tube with a water reservoir cotton-plugged at one end. For established colonies, a Y-tong (AAC) nest or small 3D-printed formicarium with narrow chambers suits their small size. The chambers should be tight enough that workers can touch the ceiling, not spacious. A naturalistic setup with a small container of moist soil or plaster works, but make sure escape prevention is excellent, these tiny ants can get through gaps you might not notice. Use fluon on the rim and fine mesh on any ventilation holes. Keep the nest area dark or covered, as Temnothorax prefer dim conditions ^[2].

Temperature and Heating

Temnothorax chun comes from a high-elevation (2000m) forest in Yunnan, so they prefer cooler temperatures than many ant species ^[1]. Keep the nest area at roughly 20-24°C. They may not tolerate heat well, avoid placing the nest near heat sources or in direct sunlight. Room temperature is likely ideal for most keepers. If your room runs warm, consider moving them to a cooler location. The cooler temperature preference means their development will be slower than tropical species, this is normal. During winter, they will benefit from a diapause period at reduced temperatures (10-15°C) for 2-3 months ^[2].

Feeding and Diet

Like other Temnothorax species, these ants are likely omnivorous with a preference for small protein sources. In the wild, they forage on the ground and scavenge small arthropods and collect honeydew from aphids or scale insects ^[2]. Offer small insects like fruit flies, pinhead crickets, or small mealworms. They will also accept sugar water or honey as an energy source. Feed small prey that they can handle, their tiny workers cannot take down large insects. Offer protein 2-3 times per week and keep a sugar source available constantly. Remove uneaten prey after 24-48 hours to prevent mold.

Humidity and Water

As forest-floor ants from a moderately humid environment at 2000m elevation, they need some moisture but not swamp conditions ^[1]. Keep the nest substrate slightly moist, damp but not waterlogged. A test tube setup with a water reservoir provides consistent humidity through the cotton. For formicarium setups, mist occasionally and allow partial drying between waterings. The key is providing a moisture gradient so ants can choose their preferred spot.

Winter Care and Diapause

As a species from 2000m elevation in Yunnan, Temnothorax chun likely experiences cold winters in its natural habitat and will benefit from a diapause period ^[1][2]. Reduce temperatures to around 10-15°C for 2-3 months during winter (roughly November to February in the Northern Hemisphere). You can move them to an unheated garage, basement, or refrigerator (not freezer) for this period. Reduce feeding during diapause, the colony will be less active and consume less. Do not feed during the coldest period. Ensure they have access to some water during diapause but reduce the water reservoir size to prevent flooding. This winter rest period helps trigger reproductive behavior in the spring.

Colony Development

This is a newly described species (2024), so specific colony development data is not available ^[1]. Based on typical Temnothorax patterns, expect relatively slow growth compared to faster-growing genera like Camponotus ^[2]. A founding queen will lay a small batch of eggs, and the first workers (nanitics) will emerge in roughly 6-10 weeks under optimal conditions. These first workers will be smaller than normal workers. Colony growth is typically moderate, expect several months to reach 20-30 workers, and potentially a year or more to reach 100+ workers. Mature colonies likely stay relatively small (under 500 workers), which is typical for the genus. Be patient with these tiny ants, their small size means smaller colony sizes overall.

Frequently Asked Questions

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References