Arnetta mercara

Arnetta mercara, the Coorg forest hopper or Coorg forest bob, is a species of butterfly belonging to the family Hesperiidae. It is found in Kerala and Karnataka.

Description
"Upper side: Forewing only with conspicuous conjoined hyaline white apical spots, no discal spots. Underside: Hindwing varies from dark (wet season form), to a variegated form (dry season form) with central and submarginal grey scaling. Forewing of male: 15 mm. Resembles dry season form of Astictopterus jama. Uncus undivided"

- William Harry Evans