Amazonian people use poison arrow frogs.

The chemical is harmless when eaten, but

injected into the bloodstream is a powerful

and rapid hemolytic poison to mammals

left | Galeruca tanaceti

In late summer, females

of this European beetle

become swollen with

eggs. Larvae feed on

tansy and bedstraws.

right | Diabrotica viridicollis From

Ecuador, this is a typical member of

this huge genus. Many North American

Diabrotica species are crop pests.

opposite | Diamphidia vittatipennis

The larva of the African Arrow Poison

Beetle stores toxins from its poisonous food

plants. It coats itself with its toxic feces for

extra protection.