Common cockchafer vs Japanese rhinoceros beetle
How does the Common cockchafer compare to the Japanese rhinoceros beetle? They are both members of the Scarabaeidae family. Below we put their classification, habitat, diet, size, and conservation status side by side — and settle who would win in a fight.


Side-by-side comparison
- Scientific name
- Melolontha melolontha
- Trypoxylus dichotomus
- Classification
- Invertebrate
- Invertebrate
- Family
- Scarabaeidae
- Scarabaeidae
- Habitat
- Woodlands, forests, and agricultural areas
- Forest
- Diet
- Herbivore
- Herbivore
- Conservation status
- Least Concern
- Least Concern
- Lifespan
- 3-5 years (mainly as larvae)
- 1-2 years
- Weight
- 2-4 grams
- 8–20 grams
Common cockchafer vs Japanese rhinoceros beetle: who would win?

Common cockchafer
2-4 grams

Japanese rhinoceros beetle
8–20 grams
Japanese rhinoceros beetle wins high confidence
Japanese rhinoceros beetle is substantially heavier (8–20 grams vs 2-4 grams). In a physical confrontation that size and power advantage is usually decisive. In the wild these two rarely (if ever) meet — this is a what-if based on the size and diet we have on record, not a prediction.
Similarities
- Both are invertebrates.
- Both belong to the Scarabaeidae family.
- Both have a herbivore diet.
- Both are listed as Least Concern.
Differences
- Habitat: Woodlands, forests, and agricultural areas vs Forest.
- Weight: 2-4 grams vs 8–20 grams.
Common cockchafer vs Japanese rhinoceros beetle: FAQ
Who would win in a fight, a Common cockchafer or a Japanese rhinoceros beetle?
Japanese rhinoceros beetle wins. Japanese rhinoceros beetle is substantially heavier (8–20 grams vs 2-4 grams). In a physical confrontation that size and power advantage is usually decisive. In the wild these two rarely (if ever) meet — this is a what-if based on the size and diet we have on record, not a prediction.
What is the difference between a Common cockchafer and a Japanese rhinoceros beetle?
Common cockchafer and Japanese rhinoceros beetle differ in several ways — habitat: woodlands, forests, and agricultural areas vs forest. weight: 2-4 grams vs 8–20 grams.
Do Common cockchafer and Japanese rhinoceros beetle live in the same habitat?
No — Common cockchafer lives in woodlands, forests, and agricultural areas, while Japanese rhinoceros beetle is found in forest.
What do Common cockchafer and Japanese rhinoceros beetle eat?
Both Common cockchafer and Japanese rhinoceros beetle have a herbivore diet.
Which is more endangered, the Common cockchafer or the Japanese rhinoceros beetle?
Common cockchafer is listed as Least Concern, while Japanese rhinoceros beetle is listed as Least Concern.
How big are Common cockchafer and Japanese rhinoceros beetle?
Common cockchafer weighs around 2-4 grams, while Japanese rhinoceros beetle weighs around 8–20 grams.

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Common cockchafer

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Japanese rhinoceros beetle







