Stygionympha robertsoni explained

Stygionympha robertsoni, or Robertson's brown, is a butterfly of the family Nymphalidae. It is found in South Africa, in Northern Cape, the southern part of Free State, the northern part of Western Cape and the Eastern Cape.

Description

The wingspan is 38–40 mm. Adults are on wing from August to March. There are probably multiple generations per year.^[1]

Individuals based in Witsand feature darker coloration that the specimens from other regions like Free State.^[2]

Habitat and behavior

The larvae feed on Poaceae grasses. Larvae have also been reared on Ehrharta erecta.

Notes and References

1. Book: Woodhall, Steve . Field Guide to Butterflies of South Africa . 2005 . Cape Town, South Africa . Struik . 978-1-86872-724-7 .
2. Krüger . M. . 2000 . A review of the afrotropical Cabera subalba group, with description of the first Southern African species (Lepidoptera: Geometridae: Ennominae) . Metamorphosis . 11 . 3 . 111–121 . 2307-5031 . Lepsoc.