Camponotus nawai

Camponotus nawai

Camponotus nawai is a small carpenter ant native to Japan and Korea. Workers measure 4-4.5mm and have a distinctive appearance with a black body, reddish-brown to blackish-brown pronotum, brown legs, and a pair of whitish spots on each of the first two abdominal segments ^[1]. This species is truly arboreal, meaning it lives and forages exclusively in trees rather than on the ground. Unlike most carpenter ants that nest in wood, C. nawai builds its colonies inside dead twigs and branches ^[1][2]. The species is monogynous, with single-queen colonies, and nuptial flights occur during August ^[1].

Quick Summary

• Difficulty: Medium
• Origin & Habitat: Japan and Republic of Korea. Found in woods near the sea coast and from lowlands to mountainous regions. Truly arboreal, nesting in dead twigs ^[1][2].
• Colony Type: Monogynous (single-queen colonies). Queens mate only once (monandrous) ^[3].
  • Colony: Monogyne
  • Founding: Claustral
• Size & Growth:
  • Queen: Estimated 6-8mm based on genus patterns (no direct measurement found)
  • Worker: 4-4.5mm ^[1]
  • Colony: Unknown for this species, but related Camponotus typically reach several hundred workers
  • Growth: Moderate, typical for Camponotus genus
  • Development: Estimated 6-8 weeks at optimal temperature based on genus patterns (Development time inferred from typical Camponotus development. No species-specific data available.)
• Antkeeping:
  • Temperature: Keep around 22-26°C. Room temperature is often suitable. Avoid temperatures below 18°C or above 30°C.
  • Humidity: Moderate humidity is fine. As an arboreal species, they prefer somewhat drier conditions compared to ground-nesting ants. Ensure the nest has some moisture but allow it to dry out partially between water additions.
  • Diapause: Yes, this is a temperate species from Japan. Provide a winter rest period of 2-3 months at 10-15°C during winter months.
  • Nesting: Arboreal nesting preference means they do well in Y-tong (AAC) nests or plaster nests with narrow chambers. Test tubes can work for founding colonies but may need to be modified to provide proper arboreal-style chambers. They prefer tight, enclosed spaces scaled to their small size.
• Behavior: This is a calm, non-aggressive species. Workers are small and relatively slow-moving. They are truly arboreal, so they spend most of their time climbing and foraging in elevated spaces. They have the typical Camponotus defensive spray but are not particularly aggressive. Escape prevention is important due to their small size, they can squeeze through small gaps. They are nocturnal to crepuscular foragers in the wild.
• Common Issues: escape prevention is critical due to their very small size, use fine mesh and tight-fitting lids, arboreal nature means they need climbing structures and vertical space in their outworld, slow colony growth can frustrate beginners, patience is key, winter diapause is required for this temperate species, skipping hibernation can weaken colonies, test tube setups may need modification to suit their arboreal preferences

Housing and Nest Setup

Camponotus nawai is an arboreal species that naturally nests in dead twigs and small branches. In captivity, they do well in Y-tong (AAC) nests or plaster nests with narrow chambers that mimic their natural twig-nesting behavior. Test tubes can work for founding colonies, but consider moving them to a more appropriate setup once the colony reaches 20-30 workers. The outworld should include climbing structures like branches, cork bark, or artificial plants since they are truly arboreal and prefer to travel and forage at elevated heights. A vertical or multi-level outworld setup works better than a flat one. ^[1][2]

Feeding and Diet

Like other carpenter ants, C. nawai is omnivorous. They accept sugar sources (honey water, sugar water) and protein foods (insects like fruit flies, mealworms, crickets). Based on related species' feeding patterns, they likely forage for honeydew and small insects in the wild. Feed them a drop of sugar water 2-3 times per week and offer protein prey every 3-4 days. Remove uneaten prey after 24 hours to prevent mold. A varied diet helps promote healthy colony growth.

Temperature and Seasonal Care

Keep the nest area at 22-26°C. Room temperature is often suitable for this species. A heating cable on one side of the nest can create a gentle gradient if your room runs cool. During winter (roughly November through February), this Japanese species requires a diapause period. Reduce temperature to 10-15°C and reduce feeding. Do not feed during deep hibernation. Return to normal temperatures gradually in spring. This winter rest period is essential for colony health and triggering reproduction the following year. ^[1]

Colony Founding

Newly mated queens seal themselves inside a small chamber and raise their first brood alone, living off stored fat reserves. This is typical claustral founding behavior for the Camponotus genus. The queen will not leave the nest to forage during this time. First workers (nanitics) typically appear smaller than mature workers and may take 6-8 weeks to emerge. Do not disturb the founding chamber during this critical period. Once workers emerge, they will begin foraging for food and the colony can be treated like an established colony.

Behavior and Temperament

Camponotus nawai is a calm, non-aggressive species. Workers are small at 4-4.5mm and move at a moderate pace. They are truly arboreal, meaning they spend their time in trees and shrubs rather than on the ground. In captivity, they will readily climb and explore elevated structures in their outworld. They are primarily nocturnal or crepuscular foragers in the wild. While they possess the typical Formicinae defensive spray, they are not particularly defensive and rarely bother keepers. Their small size makes escape prevention particularly important. ^[1][2]

Frequently Asked Questions

References