The taste receptor at the butterfly's feet helps him find the host plant and track his food. A female butterfly lands on different plants, wiggling its leaves with its feet to make the plant release its "juice". The tissue behind the legs has chemoreceptors that detect suitable plant chemical pairs. When he identifies the right plant, he will lay eggs. A butterfly will also step on its food, using an organ that can feel the sugar dissolves to taste food sources such as ripe fruit.
https://science.idntimes.com/discovery/bayu/fakta-unik-kupu-kupu/full

Good afternoon steemit friend, hopefully healthy always