Temnothorax sallei

Temnothorax sallei

Temnothorax sallei is a large, striking ant species endemic to Hispaniola (Haiti and Dominican Republic). Workers measure 3.6-4.9mm and are ferruginous red in color with a black gaster, making them notably larger than most other Temnothorax species ^[1]. They stand out for their unusual polydomous lifestyle, colonies inhabit numerous carton nests built in trees and shrubs, plus at least one soil nest at the base of plants, with workers moving freely between all nest sites ^[2]. This species is famous for its aggressive defense: when disturbed, workers swarm out en masse and deliver painful stings, carrying their gaster bent forward with the stinger ready ^[2][3].

Quick Summary

• Difficulty: Medium
• Origin & Habitat: Hispaniola (Haiti and Dominican Republic), found at elevations from 610-2,438m. They inhabit both lowland marshes and mountainous regions, building arboreal carton nests in shrubs and trees, particularly the native Baccharis myrsinites ^[2].
• Colony Type: Polydomous, colonies spread across multiple carton nests in vegetation plus soil nests at plant bases, with workers moving freely between all sites ^[2]. Colony structure (single or multiple queens) is unconfirmed.
• Size & Growth:
  • Queen: 7.2mm ^[4]
  • Worker: 3.6-4.9mm ^[1]
  • Colony: Very populous colonies, hundreds of nests observed in a single colony ^[2]
  • Growth: Moderate, inferred from typical Temnothorax development
  • Development: 6-10 weeks at optimal temperature (estimated based on related species) (Development time is estimated from typical Temnothorax patterns, specific data for this species is unavailable)
• Antkeeping:
  • Temperature: Keep at 22-26°C. Based on their elevation range (610-2,438m) in tropical Hispaniola, they likely tolerate a range from cool mountain conditions to warmer lowlands. Start at room temperature and adjust based on colony activity.
  • Humidity: Moderate to high, they naturally inhabit both marshy areas and mountainous regions with vegetation. Provide a moisture gradient so ants can choose their preferred zone.
  • Diapause: Unlikely, as a tropical Caribbean species from Hispaniola, they probably do not require hibernation. No documented diapause period found in research.
  • Nesting: This species is arboreal in nature, building carton nests in shrubs and trees. In captivity, a naturalistic setup with vertical surfaces for nest-building works well. They also use soil nests, so a hybrid setup with both arboreal space and a soil area is ideal. Y-tong nests with additional outworld space can work, but they may attempt to build carton-like structures.
• Behavior: Highly defensive and aggressive when threatened. Workers swarm rapidly when nests are disturbed and deliver painful stings. They are diurnal (day-active) and omnivorous, attending aphids and membracids for honeydew, collecting nectar from plant nectaries, and hunting small insects. Workers are active foragers that will scout for food across their territory. Their small size (under 5mm) means escape prevention is important, use fine mesh barriers. The polydomous nature means they may spread across multiple connected enclosures.
• Common Issues: painful stings, handle with care, these ants will aggressively defend, polydomous colonies may be difficult to contain, they spread across multiple nest sites, tropical species may not tolerate cool temperatures, keep above 20°C, arboreal nesting habits may frustrate attempts to keep them in standard formicaria, colonies can become very large with hundreds of workers, ensure adequate space

Housing and Nest Setup

Temnothorax sallei presents a unique housing challenge because they naturally build arboreal carton nests in shrubs and trees, not in soil or pre-made cavities like many ants. In captivity, you'll need to accommodate their natural nesting instincts. A naturalistic setup with live plants or artificial vegetation works well, they will build their carton-like structures on branches and leaves. Alternatively, you can provide a hybrid setup with both a nesting area (test tube or small formicarium connected to an outworld) and a spacious outworld where they can forage and potentially build. If using a Y-tong or acrylic nest, expect them to use it but also attempt to construct material on surfaces. They need vertical space and surfaces to walk on, not just horizontal tunnels. Multiple connected enclosures may better suit their polydomous nature. ^[2][3]

Feeding and Diet

These ants are omnivorous, similar to most Temnothorax species. In the wild, they attend aphids and membracids (small sap-sucking insects) to collect honeydew, drink nectar from extrafloral nectaries on plants, and hunt small insects including Orthoptera (grasshoppers, crickets) ^[2]. In captivity, offer a varied diet: sugar water or honey as an energy source, small live insects like fruit flies or pinhead crickets for protein, and occasional access to flowering plants if using a naturalistic setup. Feed protein 2-3 times per week and keep sugar water available constantly. They are active foragers, so place food in accessible locations in the outworld.

Temperature and Seasonal Care

Keep your colony at 22-26°C as a starting point. This species comes from Hispaniola at elevations from 610-2,438m, meaning they experience both warm lowland conditions and cooler highland temperatures ^[2]. They are likely adaptable but should be kept warm, avoid temperatures below 20°C. As a tropical Caribbean species, they probably do not require any hibernation or diapause period. Maintain stable temperatures without major fluctuations. If your room is naturally in this range, no additional heating is needed. For cooler rooms, a heating cable on one side of the nest (placed on top, not under, to avoid drying) can create a gentle gradient.

Behavior and Defense

Temnothorax sallei is notably aggressive and defensive, this is one of their most distinctive traits. When their nest is disturbed, workers pour out in mass and will aggressively attack the intruder ^[2]. They deliver painful stings, and workers have a unique defensive posture: they carry their gaster bent down beneath the thorax with the sting directed forward, ready to sting ^[2]. This combination of mass swarming and painful stings makes them one of the more defensive Temnothorax species. When working with this species, use caution, wear gloves and avoid disturbing nests unnecessarily. They are diurnal, meaning most activity happens during daylight hours. Workers are active foragers that will search for food across their territory.

Colony Structure and Growth

Temnothorax sallei forms polydomous colonies, this means a single colony inhabits multiple nests scattered across different plants or locations, with workers moving freely between them ^[2]. In the wild, colonies can be spread across numerous bushes or small trees, with hundreds of nests in a single colony ^[2]. At least one nest is typically in the soil at the base of a plant, while others are arboreal carton nests in vegetation. This polydomous lifestyle is unusual among ants and means your colony may naturally want to expand to multiple connected enclosures rather than staying in one nest. Growth rate is moderate, expect 6-10 weeks from egg to first worker at optimal temperature, similar to other Temnothorax species. Colonies can become very large with hundreds of workers.

Frequently Asked Questions

References