The wingspan is 21–23 mm. It is a large and handsome species, the lines sharply expressed and marked with black teeth or dashes on the veins. There is a very large discal dot and two red-brown bands. The face is without well-developed cone of scales and the palpus is about twice as long as the diameter of the eye The forewing has a double areole . - ab. constricta ab. nov.[Prout] has the median area reduced to a width of only 1-2 mm. and the antemedian and postmedian lines ere connected by black veins. - debrunneata Stgr., from the Ussuri district, is more mixed with blackish, the red-brown tone wanting - gigantea Stgr., from the Ussuri
district and Japan, is darker grey than in debrunneata, the reddish bands (as in rufescens) strongly developed.
[1] The oval egg is characterized by regular, large, hexagonal depressions on the shell sculpture. Final instar larvae are thick, fleshy red coloured and show no patterns. The pupa is dark reddish-brown and has two strong hook bristles on the cremaster as well as several fine bristles.
↑Prout, L. B. (1912–16). Geometridae. In A. Seitz (ed.) The Macrolepidoptera of the World. The Palaearctic Geometridae, 4. 479 pp. Alfred Kernen, Stuttgart.pdf *Шаблон:PD-notice
