Tropical Giant Whirligig Beetle vs Lined Flat Bark Ground Beetle

Side-by-side species comparison

Attribute Tropical Giant Whirligig Beetle Lined Flat Bark Ground Beetle
Scientific Name Dineutus indicus Platynus decentis
Order Coleoptera Coleoptera
Family Gyrinidae Carabidae
Size 10-15 mm 10-13 mm
Habitat Rivers & Streams Forests
Diet Omnivores Predators
Regions Indian Subcontinent, Southeast Asia North America
Conservation Least Concern Least Concern

Tropical Giant Whirligig Beetle

A large whirligig beetle found on the surfaces of tropical ponds and slow rivers across South Asia. It forms impressive swirling aggregations.

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Did You Know?

Aggregations of thousands of individuals create visible ripple patterns on still water surfaces.

Lined Flat Bark Ground Beetle

A medium-sized, flattened ground beetle with a sleek black body and fine striations on its elytra. It is commonly found under bark and in forest floor debris.

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Did You Know?

Its extremely flattened body allows it to squeeze under tight-fitting bark on fallen logs, where it hunts prey that other predators cannot reach.