Variable Damselfly vs Luminous Beetle of Ulu Selangor

Side-by-side species comparison

Attribute Variable Damselfly Luminous Beetle of Ulu Selangor
Scientific Name Coenagrion pulchellum Pteroptyx similis
Order Odonata Coleoptera
Family Coenagrionidae Lampyridae
Size 33-35mm 4-6 mm
Habitat Ponds & Lakes Rivers & Streams
Diet Predators Predators
Regions Europe Southeast Asia, Malaysia
Conservation Near Threatened Least Concern

Variable Damselfly

A blue damselfly with highly variable black markings, making identification challenging. Males have a distinctive mercury or wine-glass shaped mark on the second abdominal segment. It favors sheltered waters.

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Did You Know?

Its abdominal markings are so variable that no two individuals are exactly alike, earning it its common name.

Luminous Beetle of Ulu Selangor

A tiny synchronous firefly found along rivers in Malaysia. Males congregate by the hundreds in berembang trees along tidal rivers and flash with remarkable precision.

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Did You Know?

The Selangor River firefly displays were once among the brightest bioluminescent shows on Earth, but habitat loss has reduced their numbers.