About Japonica lutea
This description of Japonica lutea (originally referenced as Z. lutea Hew. (74 f) from Seitz) notes that the outer margin of the wings is strongly rounded, particularly in females. The hindwing has a long tail. The species is honey-yellow, and the forewing has a broad black distal border. The underside has a white submarginal line that separates the disc from the orange-red distal margin. The disc features white-edged bands, and a short similar band sits on the cross-veins of the forewing. This species is found in Amurland and Japan. The larva feeds on Quercus mongolica, and is very frequently infested by dipteran larvae. Adult butterflies are active in August, found on wide roads through tall-tree forests and also in scrubby woodland. They are rather plentiful in many locations. Continental specimens do not differ from Japanese specimens, and the width of the black forewing border varies quite strongly between individuals from the same locality.
