''Stygionympha irrorata'', the Karoo brown, is a butterfly of the family Nymphalidae. It is found in South Africa, it is widespread in the Nama Karoo areas of

Northern Cape The Northern Cape is the largest and most sparsely populated province of South Africa. It was created in 1994 when the Cape Province was split up. Its capital is Kimberley. It includes the Kalahari Gemsbok National Park, part of the Kgalagadi T ...

, the southern parts of Free State, the northern part of the Western Cape and the

Eastern Cape The Eastern Cape is one of the provinces of South Africa. Its capital is Bhisho, but its two largest cities are East London and Gqeberha. The second largest province in the country (at 168,966 km2) after Northern Cape, it was formed in ...

. The wingspan is 32–36 mm. Adults are on wing from September to November in winter rainfall areas and from September to May in summer rainfall areas. There is one generation per year, although there might be two generations in summer rainfall areas. The larvae feed on

Poaceae Poaceae () or Gramineae () is a large and nearly ubiquitous family of monocotyledonous flowering plants commonly known as grasses. It includes the cereal grasses, bamboos and the grasses of natural grassland and species cultivated in lawns an ...

grasses.

References

Butterflies described in 1873 Satyrini Butterflies of Africa Taxa named by Roland Trimen {{Satyrini-stub