Aplocera efformata, the lesser treble-bar, is a moth of the family Geometridae. The species was first described by Achille Guenée in 1858. It is known from Europe, Morocco and Anatolia. It has a wingspan of 35–41 mm. Aplocera efformata is difficult to certainly distinguish from its congener Aplocera plagiata. It is best distinguished from this that the innermost of the wing's three dark cross-bands are fairly straight with a marked bend near the front edge, not evenly curved. Moreover, it is mostly slightly smaller, the base colour of the forewing is slightly lighter and the cross-bands slightly darker coloured, so that they seem more pronounced, and the slash at the wing tip is lighter in colour, brownish, not black. The forewings are pointed, light grey with three dark grey cross-bands.