(entomology) Any ant of the tribeAttini, which grow fungi in their ant colonies using food scraps, the fungi are then used to feed the colony.
1966 August 5, NEAL A. WEBER, “Fungus-Growing Ants: A symbiotic relationship exists between an insect and a plant, involving an effective culturing technique.”, in Science.org:
Fungus-growing ants (Attini) are in reality unique fungus-culturing insects.
(Can we date this quote?), “Fungus growing ants”, in AntWiki:
The fungus-growing ants are a New World group of > 200 species, all obligate symbionts with a fungus they use for food.