141274 Great Prominent Peridea anceps Length 30mm. A subtly marked moth whose colours and patterning are a good match for oak bark. Rests with it wings held in tent-like manner. Adult has marbled brown and grey-brown wings and hairy legs. Flies May–July. Larva is green with diagonal stripes on each segment. Larva feeds on oaks. Locally common only in southern Britain.