North American Water Scorpion vs Processionary Caterpillar Moth

Side-by-side species comparison

Attribute North American Water Scorpion Processionary Caterpillar Moth
Scientific Name Ranatra fusca Ochrogaster lunifer
Order Hemiptera Lepidoptera
Family Nepidae Notodontidae
Size 28-40 mm including siphon 35-45 mm wingspan
Habitat Wetlands Woodlands
Diet Herbivores Herbivores
Regions North America Australia, Oceania
Conservation Least Concern Least Concern

North American Water Scorpion

A stick-like aquatic predator found in ponds and marshes across eastern North America. It walks slowly on submerged vegetation to ambush prey.

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Did You Know?

Despite being fully winged, it rarely flies and prefers to walk along the bottom of shallow ponds.

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.