Temnothorax pathibharaensis

Quick Summary

• Difficulty: Expert
• Origin & Habitat: East Himalayan *Abies* (fir) forest in Pathibhara, Taplejung, eastern Nepal at 3413 m elevation ^[1]. The high-altitude origin suggests they are adapted to cool, stable conditions typical of montane forests.
• Colony Type: Unknown, this species was only described in 2023 and no colony structure data exists. Based on typical *Temnothorax* patterns, they are likely single-queen colonies.
• Size & Growth:
  • Queen: Unknown, queen has not been described ^[1].
  • Worker: Estimated 3-4 mm total length based on head measurements from the description ^[1].
  • Colony: Unknown, based on related *Temnothorax* species, possibly up to 200 workers.
  • Growth: Unknown, based on genus patterns, expect moderate growth.
  • Development: Estimated 6-10 weeks at optimal temperature based on typical *Temnothorax* development. (Direct development data does not exist for this species. The estimate is based on genus-level patterns for small Myrmicinae ants.)
• Antkeeping:
  • Temperature: Likely require cool temperatures (15-20°C) given their high-altitude habitat at 3413 m elevation ^[1]. Avoid overheating, room temperature around 18°C is ideal, with a slight gradient if possible.
  • Humidity: Moderate humidity, keep the nest substrate moist but not waterlogged. Based on montane forest habitat, provide a humidity gradient with a damp area.
  • Diapause: Almost certainly required given high-altitude Himalayan origin ^[1]. Provide a cool winter period of 2-3 months at 5-10°C.
  • Nesting: In nature, likely nest in small cavities in rotting wood, under bark, or in rock crevices. In captivity, use a small Y-tong (AAC) or plaster nest with tight, narrow chambers scaled to their tiny size.
• Behavior: Docile and non-aggressive. *Temnothorax* generally rely on hiding rather than fighting and use tandem running to recruit nestmates to food sources. Workers are tiny and slow-moving, with minimal sting risk. Their defense mechanism is a modified, spatulate stinger used to smear venom onto enemies (subfamily Myrmicinae, tribe Crematogastrini). Escape risk is low due to calm nature, but their small size means they can squeeze through tiny gaps, use fine mesh or tight seals.
• Common Issues: no captive breeding data exists, this is an extremely new species with no established husbandry guidelines, high-altitude origin means they are likely sensitive to overheating, keep them cool, queen and male unknown, founding behavior is unconfirmed, wild-caught colonies may carry parasites or diseases with no documented treatment, slow growth and small colony size require patience

Discovery and Identification

Temnothorax pathibharaensis was described in 2023,making it one of the newest ant species known to science. It was discovered in the Pathibhara region of Taplejung district in eastern Nepal, collected from a fir (Abies) forest at 3413 m elevation ^[1]. The species was named after its type locality. It is closely related to two other Himalayan Temnothorax, T. rothneyi and T. simlensis, but can be distinguished by its much longer scape that actually reaches the back of the head, while the other two species have shorter scapes. The description records a head length of 0.69-0.74 mm, indicating a very small ant with an estimated total body length of 3-4 mm ^[1].

Temperature and Care

This high-altitude species comes from 3413 m elevation, meaning it is adapted to cool conditions. Unlike most ant species kept in captivity, they will not do well in warm rooms. Aim for temperatures between 15-20 °C, with 18 °C being an ideal target. Avoid any heating, room temperature is often too warm. If your room is naturally cooler (like a basement or air-conditioned space), that works perfectly. During summer months, you may need to use a cooling method or keep them in the coolest part of your home. Their montane forest origin also suggests they prefer stable temperatures without major fluctuations ^[1].

Housing and Nesting

Because workers are only about 3-4 mm total length, you need appropriately scaled housing. A small Y-tong (AAC) formicarium or a small plaster nest works well. The chambers should be tight and narrow, these tiny ants can feel exposed in large, open spaces. Provide a water tube for humidity, but ensure good ventilation to prevent mold. A test tube setup can work for founding colonies, but you may need to move them to a small formicarium as the colony grows. The nest should be kept in a cool, shaded location away from direct sunlight and heat sources.

Feeding and Diet

Like other Temnothorax, they likely accept small protein sources such as fruit flies, small mealworms, and other tiny insects. Sugar water or honey may be accepted occasionally, but protein should form the primary diet. Feed small amounts every few days, removing any uneaten food to prevent mold. Because of their tiny size, prey items should be appropriately scaled, very small insects or pre-killed arthropods work better than large feeder insects.

Seasonal Care and Overwintering

Given their origin at 3413 m in the Himalayas ^[1], these ants almost certainly require a winter dormancy period. Provide 2-3 months of cold temperatures around 5-10 °C during winter. This can be achieved by moving the colony to an unheated garage, basement, or refrigerator (with proper ventilation). Do not feed during the dormancy period. The winter rest is likely essential for colony health and reproduction, skipping hibernation would probably cause problems over time.

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