1, Appearance: The adult body length of the geometrid is about 15-20mm, the wing spread is about 45-50mm, the body color is grayish brown, and black and gray stripes are distributed on the wing surface. The adult body length of Papilio Crataegi is about 19-24mm, the wing spread is about 58-65mm, the wing color is black, and white spots are distributed on the surface.

2. Distribution: The geometrid of Sophora japonica is mainly distributed in northern China, such as Hebei, Henan, Shandong and Shanxi. Papilio Crataegi is mainly distributed in northern China, such as Hebei, Shandong, Shanxi, Shaanxi and other places.