Who Do Butterflies Prey On?

Butterflies dine on the nectar of various flowers. They have a tube--called a proboscis--through which they sip this liquid.

Well I know butterfly's is a invertebrate,because it has no back bone

While butterflies do not eat in the traditional sense, they have a
proboscis, or long tube in their mouth that acts like a straw for
drinking.
Kingdom:
Animalia

Phylum:
Arthropoda

Class:
Insecta

Order:
Lepidoptera