Discophora sondaica, the common duffer, is a species of nymphalid butterfly found in Southeast Asia.

Hindwing uniform except for the prominence of the discal secondary sex-mark, and faint indications of a subterminal series of pale spots.

Underside a dull ochraceous brown, the basal half of the wing is darker, defined outwardly by a still darker but obscure transverse band ending in a lilacine diffuse small patch at the tornus of the hindwing; both forewing and hindwing irrorated somewhat sparsely with short transverse brown striae and obscurely tinted with lilac; two ill-defined ocelli on the hindwing as in Discophora celinde.

[1] "On bamboo, living during the day in three or four leaves spun together .... full-fed larva 2 inches long, colour black mottled with grey; a rather broad yellowish dorsal line; the junction of the segments marked by a thin irregular yellow line and red spot; body covered with white hairs; head and anus black, the former marked with perpendicular yellow lines."

".. white, suspended by the tail; the labial palpi prominently projected; changing to dark brown a few hours before emergence.