Marsh Treader vs Siam Crown Moth

Side-by-side species comparison

Attribute Marsh Treader Siam Crown Moth
Scientific Name Hydrometra stagnorum Attacus taprobanis
Order Hemiptera Lepidoptera
Family Hydrometridae Saturniidae
Size 9-12 mm 150-220 mm wingspan
Habitat Ponds & Lakes Forests
Diet Herbivores Herbivores
Regions Europe, Western Asia Southeast Asia (Myanmar, Thailand) and South Asia (Sri Lanka, India)
Conservation Least Concern Least Concern

Marsh Treader

An extremely slender, stick-like bug with a greatly elongated head. It walks slowly across floating vegetation and water surfaces at pond margins, probing for tiny prey.

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Did You Know?

Its elongated head and rostrum give it a bizarre twig-like appearance, providing excellent camouflage among vegetation.

Siam Crown Moth

A large silk moth closely related to the Atlas moth with warm cinnamon-brown wings and distinctive angular wing tips. The wing pattern features complex marbling and translucent triangular windows.

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Did You Know?

The translucent wing windows are thought to help confuse predators by allowing the background to show through, breaking up the moth's silhouette.