BRYOPHILA var. RAVULA (Hübn).
A small moth, about one inch in expanse, with a slender body. The fore-wings are dark brown, with the base, tip, and inner margin whitish. The centre of the wings is suffused with red, and two transverse lines of darker colour cross them. The larva is blue with a black line on the back and a zigzag yellowish-red stripe on the sides, bordered below with black. It feeds on lichens growing on walls. It is not a British species, but is met with in Southern Europe.