Chinese Terrestrial Glowworm Firefly vs Giant Robber Fly

Side-by-side species comparison

Attribute Chinese Terrestrial Glowworm Firefly Giant Robber Fly
Scientific Name Pyrocoelia pectoralis Promachus fitchii
Order Coleoptera Diptera
Family Lampyridae Asilidae
Size 14-22 mm 20-35 mm
Habitat Mountains Meadows
Diet Predators Predators
Regions East Asia, China North America
Conservation Least Concern Least Concern

Chinese Terrestrial Glowworm Firefly

A large firefly with dark brown elytra and a bright reddish pronotum. Females are wingless and produce a steady glow. This species has been used extensively in Chinese bioluminescence research.

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Did You Know?

The mass collection of this species for commercial firefly-viewing events in China has raised conservation concerns.

Giant Robber Fly

A large, bristly predatory fly with powerful grasping legs and a sharp proboscis. It ambushes prey in mid-air with remarkable speed and precision, including insects larger than itself.

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Did You Know?

Robber flies inject prey with saliva containing neurotoxins and digestive enzymes, liquefying the insides and then sucking them out.