"A further specialization occurred from the opportunity that this coevolution offered. Up until this point the ant host had been feeding their cultivars primarily with detritus and fecal matter [26]. The shift towards herbivory consisted of certain groups of attine ants (the ancestors of Atta and Acromyrmex) shifting towards fresh plant matter as a substrate for growing their gardens [27] [28]. This shift provided the opportunity for the development of industrial-scale agriculture that we now see in the Atta and Acromyrmex genera."