Madagascan Giant Pill Bug vs Giant Pill Millipede

Side-by-side species comparison

Attribute Madagascan Giant Pill Bug Giant Pill Millipede
Scientific Name Zoosphaerium blandum Zephronia siamensis
Order Sphaerotheriida Sphaerotheriida
Family Arthrosphaeridae Zephroniidae
Size 30-50 mm 30-50 mm diameter when rolled
Habitat Forests Caves
Diet Herbivores Wood Feeders
Regions Madagascar Southeast Asia (Thailand, Malaysia, Vietnam, Laos, Cambodia)
Conservation Not Evaluated Least Concern

Madagascan Giant Pill Bug

A giant pill millipede from Madagascar that rolls into a smooth, hard ball when disturbed. They play an important role in decomposition on the forest floor.

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Did You Know?

When rolled into a ball, even predators with strong jaws struggle to pry them open.

Giant Pill Millipede

A large pill millipede that can roll into a perfect sphere the size of a golf ball when threatened. The body is dark brown to black with smooth, overlapping plates.

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Did You Know?

When rolled into a ball, the armor plates lock together so tightly that most predators cannot pry them apart.