Tropical Giant Whirligig Beetle vs Long-legged Fly

Side-by-side species comparison

Attribute Tropical Giant Whirligig Beetle Long-legged Fly
Scientific Name Dineutus indicus Dolichopus ungulatus
Order Coleoptera Diptera
Family Gyrinidae Dolichopodidae
Size 10-15 mm 5-7 mm
Habitat Rivers & Streams Rivers & Streams
Diet Omnivores Herbivores
Regions Indian Subcontinent, Southeast Asia Europe, Asia
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.

Long-legged Fly

A small, slender fly with a brilliant metallic green body and long, thin legs. Males have modified leg structures used in elaborate courtship displays performed on leaves.

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Did You Know?

Male long-legged flies perform an elaborate wing-waving courtship dance on sunlit leaves, displaying silvery wing patches to watching females like tiny semaphore signals.