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Trilobite Beetle

rare

Trilobite Beetle

Platerodrilus ruficollis

Habitat
Damp tropical rainforest floors of India and Southeast Asia
Body length
60 mm
Order
Coleoptera · Lycidae

Weird but real

Only females look like trilobites — they stay larva-shaped for life. The matching males are tiny winged beetles a tenth their size.

Why it's cool

A 4-cm armored tank crawling Borneo's forest floor that fooled scientists for 150 years, who couldn't tell which beetle it grew into.

Photographs

Trilobite beetle, Platerodrilus sp.
Holger Krisp · CC BY 4.0 · source
Lycostomus male and Platerodrilus female in Augsburg Naturmuseum.
Tiia Monto · CC BY-SA 3.0 · source