''Idmon latifascia'' is a butterfly in the family

Hesperiidae Skippers are a family of the Lepidoptera (moths and butterflies) named the Hesperiidae. Being diurnal, they are generally called butterflies. They were previously placed in a separate superfamily, Hesperioidea; however, the most recent taxonomy ...

. It was described by Henry John Elwes and James Edwards in 1897. It is found on

Sumatra Sumatra is one of the Sunda Islands of western Indonesia. It is the largest island that is fully within Indonesian territory, as well as the sixth-largest island in the world at 473,481 km2 (182,812 mi.2), not including adjacent i ...

and Borneo.

References

Butterflies described in 1897 Ancistroidini Butterflies of Indonesia {{Hesperiinae-stub