Male Everes lacturnus has a purple-blue upperwings with a blackish border that varies in width according to location and subspecies. The female butterfly has pale brown upperwings, orange lunula and black spots on the rear wing torus. The underside of the wings is silvery gray with a bright reddish orange patch on the tornus of hindwing and a series of dark gray marginal and submarginal stripes. This species has a pair of filamentous tails with white tips on the veins 2 of hindwings.
Larva: larvae of Everes lacturnus are green with small reddish brown spots on the back. It is shaped like a wood louse and the surface of its body is covered with setae.
Pupa: Everes lacturnus pupae are pale green in color with small black dots that form a double line along the back.