EASY GARDEN BUTTERFLIES
The African Plain TigerDanaus chrysippus orientis
The African Plain Tiger is one of the Nymphalidae (Brush-footed Butterflies), subfamily Danainae (Clerics and Tigers). It was originally confused with the famous American butterfly, the Monarch Danaus plexippus, so it was given the name ‘African Monarch’ but in fact it’s a totally different butterfly, even though their caterpillars look similar.
It does look a bit like a Monarch, but it’s smaller (around half the wing area), wingspan 50-75 mm as opposed to 90-100 mm, and its wings lack the black veins. The reason it’s called a ‘Plain Tiger’ is that it’s ‘plain’ orange. In Asia there are other butterflies known as Tigers that have heavy black stripes like the well-known ‘Tigger’ cat does. Our one lacks these so the word ‘plain’ serves to distinguish it from other types of ‘tiger’. It’s a conspicuous insect with a slow, wing-flapping flight at just over head height. Adults often feed on flower nectar. Males have a habit of visiting plants like Ragworts Senecio species or Heliotrope that have been injured and are emitting bitter-tasting herbivore-deterrent chemicals. They ingest the chemicals and use them to create their own predator defences. The bright orange, black, and white markings are a warning to predators that they taste nasty and are to be avoided!

Distribution
The Plain Tiger is one of the most widespread butterflies in the world, being found from New Zealand and Australia across Asia and southern Europe, and nearly all of Africa. The African Plain Tiger occurs nearly everywhere in South Africa except the super-arid desert areas in the west. The two other subspecies found in Africa – the Tawny Plain Tiger and White-winged Plain Tiger – occur as rare vagrants in South Africa. Being such a common and widespread butterfly, it’s often found in gardens.
Sucking wounded plants

African Plain Tiger on Heliotrope
Danaus chrysippus orientis
Male African Plain Tiger, with its relative the Novice, imbibing bitter-tasting alkaloid chemicals from Heliotrope plants that have been mown in a garden. They do this to develop a bad taste to deter would-be predators and to create a scent that attracts females. Doing this deliberately is a great way to attract them!
Other subspecies

White-winged Plain Tiger
Danaus chrysippus alcippus
White-winged Plain Tiger is the normal subspecies found in West and Central Africa. Occasionally one turns up in a South African garden, like this one did.
Other subspecies

Tawny Plain Tiger
Danaus chrysippus dorippus
The caterpillars feed on plants that may also contain poisons, like the Apocynaceae. Examples include Cottonbushes Gomphocarpus species, Milkweeds Asclepias, Carrion Flowers Stapelia, Huernia, or Orbea species, and Dogworts Cynanchum.
Egg

African Plain Tiger egg
Danaus chrysippus orientis
The female African Plain Tiger lays her tiny, creamy white, oval eggs on young shoots or leaves of the host plant. They are laid singly or in loose groups and are about 0.9mm diameter by 1.4mm high. They are slightly pointed at the top, flattened at the bottom, and have about 20 longitudinal ribs with fine cross-ribs. The young caterpillar hatches in less than a week.
Caterpillar

Plain Tiger caterpillar
Danaus chrysippus orientis
Plain Tiger caterpillars are smooth-skinned and brightly coloured to advertise their distasteful nature to would-be predators. They have long fleshy growths on their front, middle, and tail segments. They are harmless to humans and pets. They grow from 3mm to 30-40mm in about a month, moulting four times.
Pupa/Chrysalis

Plain Tiger pupa
Danaus chrysippus orientis
The pupa resembles a small elongated pearl with a ring of gold and black around it. The colour varies from flesh-coloured to pink, pale green, or powder-blue. Like all Nymphalidae pupae it is attached to its substrate by its tail. The pupal stage lasts 2-3 weeks, and just before the butterfly emerges its skin becomes transparent revealing the adult inside.
Host plants
The caterpillars feed on a family of plants that may contain poisons, the Apocynaceae. Examples include Cottonbushes Gomphocarpus species, Milkweeds Asclepias species, Carrion Flowers Stapelia, Huernia, or Orbea species, and Dogworts Cynanchum (being visited by a female Plain Tiger below). Recent research hints that these ‘cardenolide’ toxins have the effect of killing their insect predators like flies and wasps.

Balloon Cottonbush
Gomphocarpus fruticosus

Carrion Flower
Stapelia gigantea

Cartwheel Milkweed
Asclepias albens

Dogwort
Cynanchum natalitium
How to attract them
Gardeners can promote the presence of this butterfly by cultivating its preferred host plants and creating a sunny, sheltered environment with an abundance of nectar-rich flowers.
All these plants may appear in gardens by themselves or are easy to cultivate. The butterflies’ frequency of appearance is unpredictable. You may have a big stand of Cottonbushes only for none to appear. Then one year there will be an army of them!