South American Robber Fly vs Whirligig Beetle

Side-by-side species comparison

Attribute South American Robber Fly Whirligig Beetle
Scientific Name Microstylum magnum Gyrinus natator
Order Diptera Coleoptera
Family Asilidae Gyrinidae
Size 30-40 mm 5-7 mm
Habitat Grasslands Ponds & Lakes
Diet Predators Predators
Regions South America, Central America Europe
Conservation Least Concern Least Concern

South American Robber Fly

A large, elongate robber fly from tropical regions with a slender abdomen and long spiny legs. It hunts from exposed perches and can catch large prey relative to its body size.

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Did You Know?

Some tropical Asilidae species are among the largest predatory flies in the world, rivaling small dragonflies in wingspan.

Whirligig Beetle

A small, oval, shiny black beetle that spins in rapid circles on the water surface. Its eyes are divided in two, allowing it to see above and below water simultaneously.

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Did You Know?

Whirligig beetles have uniquely split compound eyes, with one pair looking above the waterline and another pair looking below it at the same time.