Silver-Haired Tumbling Flower Beetle vs Japanese Diving Beetle

Side-by-side species comparison

Attribute Silver-Haired Tumbling Flower Beetle Japanese Diving Beetle
Scientific Name Mordellistena argentata Cybister japonicus
Order Coleoptera Coleoptera
Family Mordellidae Dytiscidae
Size 2-4 mm 30-38 mm
Habitat Underground Ponds & Lakes
Diet Pollen Feeders Omnivores
Regions Europe, Western Asia Japan, Korean Peninsula
Conservation Least Concern Vulnerable

Silver-Haired Tumbling Flower Beetle

A tiny tumbling flower beetle covered in fine silvery pubescence across Europe. Larvae develop in the stems of various herbaceous plants.

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Did You Know?

Its covering of dense silvery hairs gives it a frosted appearance that helps it blend in on flower heads.

Japanese Diving Beetle

A large diving beetle native to Japan, once common but now increasingly rare. It has suffered severe declines due to habitat loss and invasive species.

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Did You Know?

The American bullfrog, introduced to Japan, is a major predator of this beetle and a key driver of its decline.