Wiktionary
n. A vermivorous creature; one that eats worms.
Wikipedia
Vermivore (from Latin vermi, meaning "worm" and vorare, "to devour") in zoology describes animals that eat worms (including annelids, nematodes, and other worm-like animals). Animals with such a diet are known as vermivorous. Some definitions are less exclusive with respect to the diet, but limit the definition to particular animals, e.g. "Feeding on worms or insect vermin. Used of a bird."
An entire genus of New World warblers has been given the name Vermivora.
One vermivore that may feed exclusively on worms is Paucidentomys vermidax, a rodent species of a type commonly known as shrew rats which was discovered in 2011 in Indonesia. The name, which can be translated as "worm-eating, few-toothed mouse", refers to the fact that they have only two teeth and may live exclusively on a diet of earthworms.