Cephalotes pavonii

Cephalotes pavonii

Cephalotes pavonii is a distinctive turtle ant found across the northern South American continent, from Brazil through Colombia, Peru, Guyana, Suriname, and French Guiana ^[1][2]. Workers are small black ants measuring 4-5mm, easily recognized by their flattened body and the broad, leaf-like lamellae (flaps) extending from the sides of their pronotum, these give them their 'turtle' common name. Soldiers are larger at 6-7mm and have a distinctive rectangular head disc. Queens reach nearly 10mm ^[1].

This species is part of the depressus clade, characterized by their arboreal lifestyle and association with Cecropia trees where they nest opportunistically in the hollow stems. They inhabit lowland tropical forests and seasonally dry forests from sea level up to about 1440m elevation ^[2]. Their unusual flattened body shape allows them to navigate narrow passages in tree hollows and under bark.

Quick Summary

• Difficulty: Medium
• Origin & Habitat: Tropical South America, Brazil, Colombia, Peru, Guyana, Suriname, French Guiana. Found in lowland rainforests, seasonally dry tropical forests, and forest edges from 70-1440m elevation ^[2][3]. Naturally nests in hollow Cecropia tree stems and arboreal cavities.
• Colony Type: Monogyne, single queen colonies. Colony size reaches several hundred workers based on related Cephalotes species.
  • Colony: Monogyne
  • Founding: Claustral
• Size & Growth:
  • Queen: ~10mm ^[1]
  • Worker: 4.1-5.3mm ^[1]
  • Colony: Several hundred workers (estimated based on genus patterns)
  • Growth: Moderate
  • Development: 6-8 weeks (estimated based on related Attini species) (Development time is estimated, no specific study for this species. Attini tribe members typically develop from egg to worker in 6-8 weeks at tropical temperatures.)
• Antkeeping:
  • Temperature: Keep at 24-28°C. As a tropical species, they need warm conditions. Use a heating cable on one side of the nest to create a gentle gradient if room temperature is below 24°C.
  • Humidity: Moderate to high humidity (60-80%). These arboreal nesters prefer moist conditions but not waterlogged. Keep the nest substrate slightly damp and provide a water tube.
  • Diapause: No, this is a tropical species that does not require hibernation. Maintain consistent warm temperatures year-round.
  • Nesting: Arboreal cavity-nesters. In captivity, they do well in acrylic nests or Y-tong setups with narrow chambers scaled to their flattened body. Avoid overly large chambers, they prefer tight spaces. Can also be kept in naturalistic setups with cork or wooden structures.
• Behavior: Generally peaceful and non-aggressive. Workers are slow-moving and spend most of their time foraging on surfaces. They are not known to sting, their main defense is soldier caste presence and their flattened body allows them to hide in narrow crevices. Escape risk is moderate due to their small size, use standard barrier methods. They are arboreal foragers, so provide climbing structures in the outworld.
• Common Issues: tropical species needs warmth, cold temperatures will slow or stop brood development, escape prevention is important, small size means they can squeeze through small gaps, arboreal nature requires climbing structures in the outworld, slow colony growth compared to ground-nesting species, patience is needed, wild-caught colonies may be stressed from collection and require careful acclimation

Housing and Nest Setup

Cephalotes pavonii is an arboreal species that naturally nests in hollow plant stems, particularly Cecropia trees. In captivity, they do well in acrylic nests or Y-tong formicariums with chambers sized appropriately for their flattened body shape. The chambers should be relatively narrow, these ants feel secure in tight spaces. Provide cork, wooden structures, or bamboo sections in the outworld to satisfy their natural arboreal instincts. A water tube should always be available. Because they are poor climbers on smooth surfaces, ensure the outworld has textured climbing routes or branches. ^[1]

Feeding and Diet

Like other Cephalotes species, they are omnivorous with a preference for sugary liquids. Offer sugar water, honey, or diluted maple syrup regularly. For protein, provide small insects like fruit flies, small crickets, or mealworm pieces. They will also collect honeydew from offered aphids if present. Feed protein 2-3 times per week, and keep sugar sources constantly available. Remove uneaten prey after 24-48 hours to prevent mold.

Temperature and Humidity

As a tropical species from lowland South American forests, Cephalotes pavonii requires warm temperatures between 24-28°C. Temperatures below 22°C can slow their metabolism and brood development. Use a heating cable on part of the nest if your room temperature is cooler, placing it on top of the nest to create gentle warmth without drying out the colony. Humidity should be moderate to high (60-80%). These ants come from humid forest environments, so keep the nest substrate slightly moist but not waterlogged. A water tube provides drinking water and helps maintain humidity. ^[2]

Behavior and Colony Dynamics

This species has a soldier caste, larger workers with distinctive flattened heads that serve as living door guards. The soldiers can block nest entrances with their specialized head morphology, which is a unique defensive adaptation. Workers are slow-moving and deliberate in their movements. The colony will establish a network of foragers who travel along branches and surfaces in the outworld. They are not aggressive and do not sting, making them safe to handle. The queen is large (nearly 10mm) and should be protected during colony founding. ^[1]

Growth and Development

Colony growth is moderate, expect 6-12 months from founding to first significant worker population. The first workers (nanitics) will be smaller than mature workers. Soldiers typically appear once the colony reaches around 50-100 workers. Maximum colony size for Cephalotes pavonii is not well documented, but related species typically reach several hundred workers. Be patient, arboreal turtle ants grow more slowly than many ground-nesting Myrmicinae.

Frequently Asked Questions

References