Yellow-Margined Water Scavenger Beetle vs Japanese Rose Chafer

Side-by-side species comparison

Attribute Yellow-Margined Water Scavenger Beetle Japanese Rose Chafer
Scientific Name Hydrochara caraboides Cetonia pilifera
Order Coleoptera Coleoptera
Family Hydrophilidae Scarabaeidae
Size 14-18 mm 18-25 mm
Habitat Ponds & Lakes Orchards
Diet Scavengers Wood Feeders
Regions Europe, Western Asia East Asia, Japan
Conservation Near Threatened Least Concern

Yellow-Margined Water Scavenger Beetle

A large dark water scavenger beetle with yellowish margins on the pronotum. It inhabits well-vegetated ponds and is declining in parts of northern Europe.

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Did You Know?

Larvae are fierce predators that dispatch prey much larger than themselves, including tadpoles.

Japanese Rose Chafer

A metallic green flower beetle common in Japan, known as 'shirosujikogane.' Found on flowers and tree sap during summer months. Has a distinctive buzzy flight pattern.

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Did You Know?

Unlike most beetles that lift their wing covers to fly, flower chafers can fly with their elytra closed by extending their wings through a gap on the sides.