they have a proboscus, I believe that's what it's called anyway.....
No, neither do their cousins, moths. both drink through straw like funnels that they stick into flowers and slurp nectar with.
Butterflies have a mouth part called a proboscis.
Grasshoppers have chewing mouth parts, meant for eating solid plant material. Butterflies have sucking mouth parts meant for sipping nectar.
they are both mouths and the suck things in. ex: butterflies suck nectar in and grass hopper suck things in with their mouth. They use their digestive juices to digest them. Hope this helps! :)