Tarsocera cassus
Tarsocera cassus, the spring widow, is a butterfly of the family Nymphalidae. It is found in South Africa.
The wingspan is 42–52 mm for males and 50–57 mm for females. Adults are on wing from September to December. There is one generation per year
The larvae feed on various Poaceae species, including Lolium temulentum and Haparrhenia hirta.