Wingspan is about 90-104mm. Show sexual dimorphism. Male with vein 3 running to the functional apex of hind wing. The costal fold obsolete, and the grandular patch small. Male with veins 4 to 8 of hind wings moderately developed in the aborted costal area. Similar to Erebus hieroglyphica, differs from having large whorl of fore wing and absence of yellow sub-apical bar. Abdomen with tufts of orange hair in anal segment round claspers.
Female is somewhat similar to male, but with indistinct antemedial line to fore wing and line from the whorl to inner margin. Hind wings with traces of sinuous medial line. In some morphs, there is a broad sinuous postmedial line on both wings which angled near costa of for wing. The outer area suffused with grey or sometimes mostly white on hind wing. Another morph is brownish, where the wings suffused black as far as postmedial line. Ventral side with irregular postmedial series of white posts to both wings.