Dictyophorus spumans, the koppie foam grasshopper or is a species of grasshopper

Grasshopper

The grasshopper is an insect of the suborder Caelifera in the order Orthoptera. To distinguish it from bush crickets or katydids, it is sometimes referred to as the short-horned grasshopper...

 in the family Pyrgomorphidae

Pyrgomorphidae

Pyrgomorphidae is a family of grasshoppers in the order Orthoptera commonly known as the gaudy grasshoppers. It is the only family in the superfamily Pyrgomorphoidea, and contains 29 genera and at least 70 species and subspecies.-Families and genera:...

 indigenous to South Africa

South Africa

The Republic of South Africa is a country in southern Africa. Located at the southern tip of Africa, it is divided into nine provinces, with of coastline on the Atlantic and Indian oceans...

. It grows up to a length of 80 millimetres (3.1 in), and is toxic due to its diet of milkweed.
The name "foaming grasshopper" derives from the insect's ability to produce a toxic foam from its thoracic glands. The neck shield has a warty surface.