''Pseudonympha trimenii'', or Trimen's brown, is a

butterfly Butterflies are winged insects from the lepidopteran superfamily Papilionoidea, characterized by large, often brightly coloured wings that often fold together when at rest, and a conspicuous, fluttering flight. The oldest butterfly fossi ...

of the family

Nymphalidae The Nymphalidae are the largest family of butterflies, with more than 6,000 species distributed throughout most of the world. Belonging to the superfamily Papilionoidea, they are usually medium-sized to large butterflies. Most species ha ...

. It is found in

South Africa South Africa, officially the Republic of South Africa (RSA), is the Southern Africa, southernmost country in Africa. Its Provinces of South Africa, nine provinces are bounded to the south by of coastline that stretches along the Atlantic O ...

. The

wingspan The wingspan (or just span) of a bird or an airplane is the distance from one wingtip to the opposite wingtip. For example, the Boeing 777–200 has a wingspan of , and a wandering albatross (''Diomedea exulans'') caught in 1965 had a wingsp ...

is 40–52 mm for males and 44–56 mm for females. Adults are on wing from early September to late November. There is one generation per year. The larvae feed on

Poaceae Poaceae ( ), also called Gramineae ( ), is a large and nearly ubiquitous family of monocotyledonous flowering plants commonly known as grasses. It includes the cereal grasses, bamboos, the grasses of natural grassland and species cultivate ...

grasses, including '' Danthonia stricta'' and other coarse, wiry grasses.

Subspecies

*''Pseudonympha trimenii trimenii'' (south-western Cape) *''Pseudonympha trimenii nieuwveldensis'' Dickson, 1966 (Nieuwveld Mountains in the south-western Cape) *''Pseudonympha trimenii ruthae'' Dickson, 1966 (Eastern Cape) *''Pseudonympha trimenii namaquana'' van Son, 1966 (Northern Cape)

References

Pseudonympha Butterflies described in 1868 Endemic butterflies of South Africa Taxa named by Arthur Gardiner Butler {{Satyrini-stub