Temnothorax bradleyi

Quick Summary

• Difficulty: Medium
• Origin & Habitat: Southeastern United States: central Florida north into Georgia, west to Alabama and Louisiana, and likely the Carolinas ^[2][3][4]. They inhabit open areas within the longleaf pine ecosystem, nesting under the bark of large living pines like Pinus elliottii and P. palustris ^[2].
• Colony Type: Single-queen colonies (monogyne). One documented wild colony contained 1 dealate queen,42 workers,2 males, and brood ^[1]. No evidence of ergatoid replacement queens or polygyny.
• Size & Growth:
  • Queen: Total length approximately 5-6 mm (inferred from genus Temnothorax, body length not directly measured in literature)
  • Worker: Total length approximately 2.5-3 mm (inferred from genus Temnothorax, only mesosomal length reported in literature)
  • Colony: Up to at least 42 workers based on a single wild colony ^[1]. Likely max out around 50-100 workers in captivity.
  • Growth: Moderate
  • Development: 6-10 weeks (estimated based on typical Temnothorax development, no specific studies for this species) (Development time is not documented for T. bradleyi. The estimate assumes optimal temperature around 20-24°C. Keep at stable room temperature.)
• Antkeeping:
  • Temperature: Keep at 20-24°C, matching their native southeastern US climate ^[2]. Room temperature is suitable, avoid extremes.
  • Humidity: Moderate humidity (50-60%). As arboreal nesters under bark, they prefer drier conditions than ground-nesting ants. Provide a water source in the outworld but avoid waterlogging the nest. Let the nesting material dry between waterings.
  • Diapause: Likely requires a mild winter rest period (diapause) based on temperate origins. Offer 2-3 months at 10-15°C. Not explicitly documented for this species, but recommended for long-term health.
  • Nesting: Arboreal specialists. Use Y-tong (AAC) nests with narrow chambers, or naturalistic setups with flat stones, cork, or bark pieces to mimic the tight galleries under pine bark ^[5][1]. Avoid soil-based setups and tall, open spaces.
• Behavior: Peaceful and non-aggressive. Workers are tiny and timid, foraging on vertical surfaces. In the wild, they are attracted to sweet baits like peanut butter and jelly ^[2]. As members of the Crematogastrini tribe, they use a smearing defense with a modified stinger rather than stinging. Their small size (2.5-3 mm) makes them excellent escape artists, use fine mesh (0.5 mm or smaller) and seal all gaps.
• Common Issues: tiny size means escapes are likely without fine mesh barriers, check all seals., arboreal nesting requires specialized housing different from typical soil nests., uncommon in the hobby, wild colonies are difficult to find and collect., slow colony growth may test patience., sensitive to disturbance: handle with care, especially during founding.

Housing and Nest Setup

Temnothorax bradleyi requires an arboreal setup to match its natural nesting habits. In the wild, colonies live in flat galleries under the bark of living pine trees, about one meter above ground ^[1]. For captivity, use a Y-tong (AAC) nest with narrow, flat chambers, or create a naturalistic nest using flat pieces of cork bark or stones stacked to form tight crevices. The space should be snug, these ants prefer confined, flat tunnels rather than tall chambers. Avoid soil nests altogether. Connect to a small outworld with fine mesh (0.5 mm or smaller) to prevent escapes. A test tube may work for founding, but transfer to an arboreal nest once the colony grows.

Feeding and Diet

Wild workers are attracted to sweet baits like peanut butter and jelly placed on tree trunks ^[2], suggesting a strong preference for sugars. In captivity, provide a constant source of sugar (honey, sugar water, or jelly) and offer small protein 2-3 times a week. Good options include fruit flies, pinhead crickets, springtails, or pieces of mealworm. Since workers are tiny, prey must be appropriately sized. Remove uneaten food after a day to prevent mold.

Temperature and Seasonal Care

Based on the native southeastern US climate, keep the nest at 20-24°C ^[2]. Room temperature is fine, a slight gradient allows the ants to choose their preferred spot. During winter, provide a mild cooling period for 2-3 months at 10-15°C. This is typical for temperate ant species and likely helps maintain healthy seasonal cycles, though it hasn't been explicitly studied for this species. Do not expose them to freezing temperatures.

Colony Dynamics

Colonies are monogyne (single queen). One wild colony contained 1 queen,42 workers,2 males, and brood ^[1]. This suggests small colony sizes, likely maxing out around 50-100 workers in captivity. Founding behavior hasn't been described, it's unknown whether queens are claustral or semi-claustral. Once a colony is established, growth is moderate. First workers (nanitics) may be smaller than usual, a common pattern in many ants. Expect slow but steady progress, patience is key.

Behavior and Temperament

These ants are peaceful and non-aggressive. Workers are tiny and timid, spending most of their time foraging on vertical surfaces. They do not have a functional stinger, instead, as members of the Crematogastrini tribe, they use a smearing defense where a modified flattened stinger wipes venom onto attackers. This makes them harmless to keepers. However, their minute size makes them expert escape artists, use fine mesh (0.5 mm or smaller) on all openings and inspect the setup regularly for gaps. ^[2]

Frequently Asked Questions

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References