Thestor rooibergensis, the Rooiberg skolly, is a butterfly of the family Lycaenidae. It is found in South Africa, where it is found in fynbos-covered mountain slopes in the Rooiberg area above Ladismith in the Western Cape.
The wingspan is 26âÂÂ28 mm for males and 27âÂÂ29 mm for females. Adults are on wing from the September to December, with a peak in October. There is one generation per year.