The beautiful and excellent winter noctuid moths (Noctuidae) of Japan are shown on 47 colour plates (103 species, 807 specimens) with magnified photos of all included taxa and showing the variation of each taxon in natural size. Identification of the various species (e.g. Xylena spp., Conistra spp., Orthosia spp.) is possible thanks to the included black and white plates. Also rarity and fair value are shown by a seven-star rating.