Tundra Robber Fly vs Processionary Caterpillar Moth

Side-by-side species comparison

Attribute Tundra Robber Fly Processionary Caterpillar Moth
Scientific Name Rhadiurgus variabilis Ochrogaster lunifer
Order Diptera Lepidoptera
Family Asilidae Notodontidae
Size 10-15 mm 35-45 mm wingspan
Habitat Beaches & Coastal Woodlands
Diet Herbivores Herbivores
Regions Scandinavia, Finland, Scotland, northern Russia Australia, Oceania
Conservation Least Concern Least Concern

Tundra Robber Fly

A medium-sized robber fly with a dark body and distinctive bristly face. It is an aerial predator that ambushes other flying insects from perches on rocks and low vegetation. Adults have powerful grasping legs.

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Did You Know?

This robber fly catches prey in midair and injects digestive enzymes to liquefy the insect's insides before drinking them.

Processionary Caterpillar Moth

A moth whose caterpillars are famous for travelling in long, nose-to-tail processions through the Australian bush. The larvae are covered in irritating hairs that can cause severe allergic reactions in humans.

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Did You Know?

Processions of caterpillars can stretch for metres and contain hundreds of individuals following a silk trail left by the leader.