Cassionympha cassius

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Cassionympha cassius
In Adalbert Seitz's Fauna Africana
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Lepidoptera
Family: Nymphalidae
Genus: Cassionympha
Species: C. cassius
Binomial name
Cassionympha cassius
(Godart, [1824])[1]
  • Satyrus cassius Godart, [1824]
  • Pseudonympha hyperbioides Wallengren, 1857

Cassionympha cassius, the rainforest brown, is a butterfly of the family Nymphalidae. It is found in South Africa, it is common in cool and moist forests, coastal and riverine bush and kloofs (gorges in the Western Cape along the western coast through the Eastern Cape to KwaZulu-Natal, the eastern slopes of the escarpment through Swaziland and Mpumalanga to the Soutpansberg in Limpopo.

The wingspan is 34–38 mm for males and 36–42 mm for females. Adults are on wing from September to May.[2]

The larvae feed on Poaceae species, including Pentaschistis capensis and Juncus capensis.


  1. ^ "Cassionympha van Son, 1955" at Markku Savela's Lepidoptera and Some Other Life Forms
  2. ^ Woodhall, Steve (2005). Field Guide to Butterflies of South Africa. Cape Town, South Africa: Struik. ISBN 978-1-86872-724-7.