Ant-associated and free-living actinomycete isolates used for the cross-phylogeny and within-Acromyrmex bioassay experiments.

Colony IDs are given for isolates from fungus-growing ant colonies; NRRL numbers are given for the free-living actinomycetes obtained from the USDA ARS culture collection (http://nrrl.ncaur.usda.gov). Isolates are listed according to ant species origin, the strains involved in the cross-phylogeny bioassay are numbered 1–19, and the strains involved in the within-Acromyrmex bioassay are labeled A-L.