Borbo fatuellus

Borbo fatuellus, the long horned swift, long horned skipper or foolish swift, is a butterfly of the Hesperiidae family. It is found in tropical Africa and south-western Arabia. The habitat consists of wet forests, moist woodland and coastal bush.

The wingspan is 33–42 mm for males and 40–43 mm for females. Adults are on wing year-round, but are more common from October to May in southern Africa.

The larvae feed on Ehrharta erecta, Setaria sulcata, Setaria megaphylla, Imperata cylindrica, Pennisetum, Panicum and Digitaria species.