Thoressa evershedi, the Evershed's ace, is a butterfly belonging to the family Hesperiidae.W. H. Evans described it from Palni Hills in 1910 and named it after Evershed as he was the first person to collect it.

Description

"Male. Upperside blackish-brown, much the same colour as in H. sitala. Forewing with the spots similarly placed, but a little smaller. Cilia grey, with brown patches. Hindwing without markings, uniformly coloured. Cilia grey, without the patches. Underside. Forewing paler brown, the costal and apical areas suffused with ochreous-red, the spots as on the upperside. Hindwing ochreous-red, the abdominal half of the wing and the costa (narrowly) suffused with brown, the outer margin with a brownish macular band and with indications of some brownish discal spots. Antennae black, ringed with white, apical half of club orange-red, the lower half of the club on the underside and part of the shaft white; palpi with black and white hairs pectus with grey hairs; head and body above and below concolorous with the wings."

• Charles Swinhoe

Range

The butterfly occurs in western Tamil Nadu, eastern Kerala. It is an occasional visitor to south-western Karnataka.