Camponotus japonicus Ant Colony (Japanese Carpenter Ants)
The Camponotus japonicus is a striking East Asian Carpenter Ant Species – Calm, Large & Long-Lived
The Camponotus japonicus is a highly sought-after carpenter ant species originating from East Asia. Known for its impressive size, calm behaviour, and glossy black appearance, this species is ideal for keepers looking for a long-term, visually striking colony.
With proper care, colonies can grow into thousands of workers and develop into one of the most impressive display species in ant keeping.
🧬 Species Overview
- Scientific name: Camponotus japonicus
- Origin: Japan, Korea, China, Mongolia and surrounding regions
- Type: Carpenter ant species
- Queen size: 15–18 mm
- Major workers: 9–14 mm
- Minor workers: 6–9 mm
- Colony size potential: Up to 5,000+ workers
- Growth rate: Slow initial, strong long-term expansion
- Temperament: Calm, non-aggressive
This species is known for strong polymorphism, meaning workers develop into different sizes depending on colony needs, making them extremely visually dynamic and rewarding to keep.
🐜 Behaviour & Natural History
In the wild, Camponotus japonicus:
- Builds underground nests without visible mounds
- Forages mainly during daylight hours
- Lives in structured colonies with a single queen
- Shows clear caste differentiation (minors, medias, majors)
They are highly organised, calm ants that are excellent for observation and long-term keeping.
🏠 Recommended Setup (UK Optimised System)
🧪 Founding Stage (0–5 workers)
Start in a:
- Standard test tube setup
- Dark, stable environment
- Minimal disturbance
Do not rush expansion — stability is critical in early colony development.
🏠 Growth Stage (5+ workers)
Once the colony reaches ~5 workers, it should be moved into a controlled ant farm system.
⭐ Recommended Nest System
👉 A7 Plus Ant Farm Kit
https://www.bestantsuk.com/product-page/ant-farm-kit-a7-plus
🧠 Why We Recommend the A7 Plus System
The A7 Plus system is designed to create a controlled, beginner-proof environment that supports stable colony growth.
It provides:
- Integrated humidity monitoring
- Temperature monitoring
- Stable enclosed nest chamber
- Easy visibility of brood development
📈 Why this matters
Most colony failures come from:
- Incorrect humidity levels
- Temperature instability
- Overwatering or drying nests
- Poor brood conditions
The A7 Plus system removes guesswork by creating a stable microclimate environment, allowing consistent development and reducing keeper error.
🔥 Heating System (Highly Recommended)
👉 Advanced Heating System 4W
https://www.bestantsuk.com/product-page/advanced-heating-system-for-ant-farms-small-4w
🌡️ Requirements:
- Maintain nest temperature: 24–28°C
- Always heat one side only (temperature gradient)
🧠 Benefits:
- Faster brood development
- Stable queen egg-laying cycles
- Improved colony expansion rate
🌡️ Temperature & Humidity
🌡️ Temperature
- Ideal: 24–28°C (heated zone)
💧 Humidity
- Stable range: 60–70%
Consistency is more important than extremes.
🍯 Feeding System (Controlled & Clean Method)
⚠️ Core Rule
No open liquid feeding is recommended.
All liquids must be delivered via cotton-based feeding.
🍯 Sugar Source
👉 Ant Honey
https://www.bestantsuk.com/product-page/ant-honey-organic-food
- Main energy source
- Provided via cotton only
- Supports daily colony activity
🪱 Protein Source (Primary Growth Food)
👉 Cricket Mash
https://www.bestantsuk.com/product-page/nextswarm-cricket-mash-ant-food
- High-protein insect-based food
- Easy consumption for all castes
- Supports brood and worker growth
🍮 Supplementary Balanced Food
👉 Protein Jelly
https://www.bestantsuk.com/product-page/ant-food-protein-jelly
- Combines carbohydrates + protein
- Simplifies feeding routine
- Excellent for consistent colony development
🍽️ Feeding Setup (Recommended)
👉 Ant Feeding Dish
https://www.bestantsuk.com/product-page/ants-feeding-dish-three-coarse-meal-large
Benefits:
- Keeps food off the substrate
- Reduces mould growth
- Improves hygiene and cleanliness
- Makes feeding more controlled
💡 Lighting & Environment
- Keep in normal room daylight conditions
- ❌ Avoid direct sunlight on the nest
- Nest remains dark via red filter + cover
This supports:
- Natural behaviour
- Reduced stress
- Stable colony rhythm
❄️ Diapause (Rest Period)
❌ No full hibernation required
🌙 Optional controlled diapause:
- Duration: ~1 month
- Timing: January
- Temperature: ~15°C
⚠️ Do not go below 15°C
- Protects the queen's health and colony stability
🐜 Growth & Behaviour
- Slow early development phase
- Rapid expansion after establishment
- Calm and easy to manage
- Highly visual polymorphic workers
- Excellent long-term display species
⚠️ Care Summary (Common Mistakes)
- ❌ Using oversized nests too early
- ❌ Open liquid feeding
- ❌ Poor humidity control
- ❌ Skipping heating system
- ❌ Direct sunlight exposure
- ❌ Irregular feeding routines
📄 Free Camponotus japonicus care sheet (PDF) | All ant care sheets
📦 Shipping & Legal Notice
- 🚚 Shipped via Royal Mail (UK First Class)
- 🇬🇧 These ants are not native to the UK
- ⚠️ It is illegal to release them into the wild
If you experience any issues, please contact support, and we will assist.
⭐ Why Choose Camponotus japonicus?
- Large, impressive carpenter ants
- Long-lived queen (10–15+ years)
- Stable colony structure
- Highly rewarding long-term species
- Perfect for controlled ant farm systems
🛒 Recommended Full Setup (Best Results)
For optimal success, we recommend combining:
- 🏠 A7 Plus Ant Farm Kit
- 🔥 Advanced Heating System 4W
- 🍯 Ant Honey
- 🪱 Cricket Mash
- 🍮 Protein Jelly
- 🍽️ Feeding Dish
This creates a complete controlled ecosystem for long-term colony success.
