Stygionympha robertsoni
{{Italic title}}
{{Short description|Species of butterfly}}
{{Speciesbox
| image =
| image_caption =
| display_parents = 3
| genus = Stygionympha
| species = robertson
| authority = (Riley, 1932)[http://ftp.funet.fi/pub/sci/bio/life/insecta/lepidoptera/ditrysia/papilionoidea/nymphalidae/satyrinae/stygionympha/ "Stygionympha van Son, 1955"] at Markku Savela's Lepidoptera and Some Other Life Forms
| synonyms = *Pseudonympha vigilans robertsoni Riley, 1932
}}
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.{{cite book|last=Woodhall |first=Steve |title=Field Guide to Butterflies of South Africa |year=2005 |location=Cape Town, South Africa |publisher=Struik |isbn=978-1-86872-724-7 }}
Individuals based in Witsand feature darker coloration that the specimens from other regions like Free State.{{Cite journal |last=Krüger |first=M. |date=2000 |title=A review of the afrotropical Cabera subalba group, with description of the first Southern African species (Lepidoptera: Geometridae: Ennominae) |url=https://metamorphosis.org.za/?p=articles&s=Details&pt=92&i=794 |journal=Metamorphosis |volume=11 |issue=3 |pages=111–121 |issn=2307-5031 |via=Lepsoc}}
Habitat and behavior
The larvae feed on Poaceae grasses. Larvae have also been reared on Ehrharta erecta.{{Citation needed|date=October 2024}}
References
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Category:Butterflies described in 1932
Category:Taxa named by Norman Denbigh Riley
Category:Butterflies of Africa
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