Onebala iridosoma is a moth in the family Gelechiidae.

The forewings are dark fuscous with three irregular pale blue-metallic transverse streaks, obtusely angulated and interrupted above the middle, the first from near the base of the costa to one-third of the dorsum, the second from one-third of the costa to beyond the middle of the dorsum, the third from three-fifths of the costa to two-thirds of the dorsum, the two latter with white on the costal edge.

There is also a violet-silvery metallic subterminal streak, angulated above the middle and indented between this and the costa.

The apical and terminal area beyond this is brownish ochreous, with four blackish longitudinal marks, and a black marginal line.

This article on a moth of the subfamily Dichomeridinae is a stub.