Temnothorax mitsukoae

Quick Summary

• Difficulty: Easy
• Origin & Habitat: Native to Japan, specifically the Kagoshima region of Kyushu. Found in heavily disturbed habitats including ports, lava fields, and urban areas ^[1][2][3].
• Colony Type: Likely monogyne (single queen) based on typical Temnothorax patterns, unconfirmed for this species.
• Size & Growth:
  • Queen: 2.9mm total length ^[1]
  • Worker: 2.2mm total length ^[1]
  • Colony: Unknown, inferred from genus patterns, likely under 200 workers at maturity.
  • Growth: Moderate
  • Development: Unknown, estimated 6-10 weeks based on related Japanese Temnothorax species. (Development time is inferred from genus‑level data, as specific studies for this species are unavailable.)
• Antkeeping:
  • Temperature: Keep at room temperature, roughly 20-24°C. This temperate species does not need high heat.
  • Humidity: Moderate humidity, keep the nest substrate slightly damp but not waterlogged.
  • Diapause: Likely yes, based on its Japanese origin. Reduce temperature to 10-15°C for 2-3 months during winter. This is inferred and not confirmed for this species.
  • Nesting: Temnothorax prefer tight, enclosed spaces. A Y‑tong (AAC) nest, plaster nest, or test tube setup with narrow chambers works well. In nature they likely nest in small cavities under stones or in rotting wood.
• Behavior: Peaceful and non‑aggressive. Workers are tiny (2.2mm) and relatively slow. Escape risk is high due to small size, use fine mesh barriers. Defense mechanism: as a member of tribe Crematogastrini, they use a smear defense, a flattened stinger to wipe venom onto enemies rather than sting. Foraging typical of the genus: they likely scavenge, collect honeydew, and occasionally prey on small insects.
• Common Issues: tiny size: escapes are likely without fine mesh barriers., limited data on this newly described species: care is based on genus patterns., slow growth can test patience., winter dormancy is required for long‑term health (inferred)., wild‑caught colonies may carry parasites.

Housing and Nest Setup

Temnothorax mitsukoae is tiny, so housing must match their size. A Y‑tong (AAC) nest or plaster nest with narrow chambers works well, tight spaces mimic their natural nesting sites under stones or in rotting wood ^[1]. Test tubes are also fine, especially for founding colonies. The key is to provide small, enclosed chambers, large open areas stress them. A small outworld for foraging is enough. Because workers are only 2.2mm, escape prevention is critical: use fine mesh on all openings ^[1].

Feeding and Diet

Like most Temnothorax, T. mitsukoae likely has a varied diet including small insects, honeydew, and nectar. In captivity, offer small protein sources such as fruit flies, pinhead crickets, or tiny mealworms. A sugar water or honey water source should always be available. Feed protein 2-3 times per week and remove uneaten prey after 24 hours to prevent mold. Given their tiny size, prey items must be appropriately small.

Temperature and Seasonal Care

Keep the colony at room temperature (20-24°C). As a species from temperate Japan, they don’t need high heat. Based on their origin, a winter dormancy period is likely necessary. During winter, reduce temperature to 10-15°C for 2-3 months. You can achieve this by moving the colony to a cool location or using a refrigerator’s vegetable drawer (in a separate enclosure, not inside the fridge). Do not feed during hibernation. This is inferred from genus patterns, as no specific studies exist for this species.

Behavior and Colony Dynamics

Temnothorax mitsukoae is a peaceful species that shows no aggression toward keepers. Workers are small and slow‑moving. The defense mechanism is a smear venom: they possess a flattened stinger used to wipe venom onto enemies (typical of tribe Crematogastrini). All known specimens were collected in heavily disturbed habitats such as ports, lava fields, and urban areas ^[1][2][3], suggesting a tolerance for human‑altered environments. Colonies are likely small, probably under a couple hundred workers at most, based on worker size. Queens are 2.9mm and share the genus’s dark coloration ^[1].

Growth and Development

Specific development data for T. mitsukoae is unavailable because the species was only described in 2013. Based on typical Temnothorax patterns, egg‑to‑worker time is estimated at 6-10 weeks at room temperature (20-24°C). The first workers (nanitics) will be even smaller than normal workers, this is typical for claustral founding. Growth rate is moderate, do not expect rapid colony expansion. Patience is key with small species. A healthy colony may grow slowly in the first year, with acceleration later, but exact numbers are unknown. ^[1]

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