Nebrioporus Water Beetle vs Spotted Tumbling Flower Beetle

Side-by-side species comparison

Attribute Nebrioporus Water Beetle Spotted Tumbling Flower Beetle
Scientific Name Nebrioporus nipponicus Mordellistena pumila
Order Coleoptera Coleoptera
Family Dytiscidae Mordellidae
Size 5-7 mm 2-3.5 mm
Habitat Mountains Farmland
Diet Omnivores Pollen Feeders
Regions East Asia, Japan Europe
Conservation Least Concern Least Concern

Nebrioporus Water Beetle

A small diving beetle endemic to Japan found in clean mountain streams. Part of a genus that prefers running water over still pools. An indicator species for unpolluted waterways.

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Did You Know?

This beetle carries a bubble of air under its wing covers when diving, which it uses to breathe underwater like a built-in scuba tank.

Spotted Tumbling Flower Beetle

A tiny tumbling flower beetle found on composite flowers in summer. Larvae develop in plant stems. One of the smallest and most frequently encountered mordellid species.

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Did You Know?

So small that it can hide inside individual florets of composite flower heads.