When you encounter a fat bug covered with black stripes with yellow dots in the celery field, you will never imagine that it will transform into a colorful butterfly with time. Its name is old world swallowtail.

There are yellow and white stripes spreadingon the brown-black wings, and a few blue spots on the tail.When it suspends in the air and among the flowers, it looks like a flying flower.

Although it has a beautiful appearance, and also has certain medicinal value, for Apiaceae vegetables such as fennel, carrot, and celery, the old world swallowtailis a real "killer" because its larvae feed on the leaves of these plants.