The Camponotus japonicus is a striking East Asian Carpenter Ant Species โ 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.
๐งฌ Species Overview
- Scientific name: Camponotus japonicus
- Origin: Japan, Korea, China, Mongolia and surrounding regions
- Type: Carpenter ant species
- Queen size: 15โ18 mm
- Major workers: 9โ14 mm
- Minor workers: 6โ9 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.
๐ 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.
๐ Recommended Setup (UK Optimised System)
๐งช Founding Stage (0โ5 workers)
Start in a:
- Standard test tube setup
- Dark, stable environment
- Minimal disturbance
Do not rush expansion โ stability is critical in early colony development.
๐ Growth Stage (5+ workers)
Once the colony reaches ~5 workers, it should be moved into a controlled ant farm system.
โญ Recommended Nest System
๐ A7 Plus Ant Farm Kit (Best Ants UK)
https://www.bestantsuk.com/product-page/ant-farm-kit-a7-plus
๐ง 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
๐ 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.
๐ฅ Heating System (Highly Recommended)
๐ Advanced Heating System 4W
https://www.bestantsuk.com/product-page/advanced-heating-system-for-ant-farms-small-4w
๐ก๏ธ Requirements:
- Maintain nest temperature: 24โ28ยฐC
- Always heat one side only (temperature gradient)
๐ง Benefits:
- Faster brood development
- Stable queen egg-laying cycles
- Improved colony expansion rate
๐ก๏ธ Temperature & Humidity
๐ก๏ธ Temperature
- Ideal: 24โ28ยฐC (heated zone)
๐ง Humidity
- Stable range: 60โ70%
Consistency is more important than extremes.
๐ฏ Feeding System (Controlled & Clean Method)
โ ๏ธ Core Rule
No open liquid feeding is recommended.
All liquids must be delivered via cotton-based feeding.
๐ฏ Sugar Source
๐ Ant Honey (Best Ants UK)
https://www.bestantsuk.com/product-page/ant-honey-organic-food
- Main energy source
- Provided via cotton only
- Supports daily colony activity
๐ชฑ Protein Source (Primary Growth Food)
๐ Cricket Mash (Best Ants UK)
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
๐ฎ Supplementary Balanced Food
๐ Protein Jelly (Best Ants UK)
https://www.bestantsuk.com/product-page/ant-food-protein-jelly
- Combines carbohydrates + protein
- Simplifies feeding routine
- Excellent for consistent colony development
๐ฝ๏ธ Feeding Setup (Recommended)
๐ Ant Feeding Dish (Best Ants UK)
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
๐ก Lighting & Environment
- Keep in normal room daylight conditions
- โ Avoid direct sunlight on the nest
- Nest remains dark via red filter + cover
This supports:
- Natural behaviour
- Reduced stress
- Stable colony rhythm
โ๏ธ Diapause (Rest Period)
โ No full hibernation required
๐ Optional controlled diapause:
- Duration: ~1 month
- Timing: January
- Temperature: ~15ยฐC
โ ๏ธ Do not go below 15ยฐC
- Protects the queen's health and colony stability
๐ Growth & Behaviour
- Slow early development phase
- Rapid expansion after establishment
- Calm and easy to manage
- Highly visual polymorphic workers
- Excellent long-term display species
โ ๏ธ Care Summary (Common Mistakes)
- โ Using oversized nests too early
- โ Open liquid feeding
- โ Poor humidity control
- โ Skipping heating system
- โ Direct sunlight exposure
- โ Irregular feeding routines
๐ฆ Shipping & Legal Notice
- ๐ Shipped via Royal Mail (UK First Class)
- ๐ฌ๐ง These ants are not native to the UK
- โ ๏ธ It is illegal to release them into the wild
If you experience any issues, please contact support, and we will assist.
โญ Why Choose Camponotus japonicus?
- Large, impressive carpenter ants
- Long-lived queen (10โ15+ years)
- Stable colony structure
- Highly rewarding long-term species
- Perfect for controlled ant farm systems
๐ Recommended Full Setup (Best Results)
For optimal success, we recommend combining:
- ๐ A7 Plus Ant Farm Kit
- ๐ฅ Advanced Heating System 4W
- ๐ฏ Ant Honey
- ๐ชฑ Cricket Mash
- ๐ฎ Protein Jelly
- ๐ฝ๏ธ Feeding Dish
This creates a complete controlled ecosystem for long-term colony success.