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Wiktionary
fungivore

n. Any fungivorous organism; a fungus-eater.

Wikipedia
Fungivore

Fungivory or mycophagy is the process of organisms consuming fungi. Many different organisms have been recorded to gain their energy from consuming fungi, including birds, mammals, insects, plants, amoeba, gastropods, nematodes, bacteria and other fungi. Some of these, which only eat fungi are called fungivores whereas others eat fungi as only part of their diet, being omnivores.