Peridea anceps, the great prominent, is a moth of the family Notodontidae first described by Johann August Ephraim Goeze in 1781.

The antennae are almost half as long as the forewing, narrowly feathered in the male and wire-shaped in the female.

The forewing is oblong and narrow, almost oval, with a wide "tooth" of backward-pointing hairs approximately in the middle of the back edge.

It is yellowish grey with four more or less distinct narrow transverse bands, the two innermost ones being dark and the two outermost light.

The larva is naked without any body outgrowths, green with short, bright oblique stripes on the side of each body joint and some, partially broken, lighter longitudinal stripes along the back.