Acromyrmex pubescens is a species of leafcutter ants of the subfamily Myrmicinae.

They are native to Paraguay, northern Argentina, and eastern Brazil.

Starting from Felix Santschi in 1912, subsequent studies have classified it as a subspecies of Acromyrmex lundii, until a reexamination in 2007 resulted in their reclassification as a separate species.

[2] Acromyrmex pubescens, like most leafcutter ants, subsist mostly through a mutualistic relationship with fungi of the genus Leucocoprinus.

They cultivate the fungi with masticated leaves taken from nearby trees.