Table 1. Ant-associated and free-living actinomycete isolates used for the cross-phylogeny and within-Acromyrmex bioassay experiments.
| Ant species origin | Colony ID/NRRL number | Geographic origin |
| Cross-phylogeny Petri dish bioassay | ||
| Apterostigma dentigerum (1) | AL040114-11 | Panama |
| Apterostigma dentigerum (2) | MTP050505-10 | Panama |
| Apterostigma dentigerum (3) | AL050512-17 | Panama |
| Cyphomyrmex muelleri (4) | AL050512-19 | Panama |
| Cyphomyrmex longiscapus (5) | ST040117-7 | Panama |
| Cyphomyrmex costatus (6) | CC031210-9 | Panama |
| Trachymyrmex cornetzi (7) | AL041002-3 | Panama |
| Trachymyrmex cornetzi (8) | AL041005-10 | Panama |
| Trachymyrmex zeteki (9) | AL030107-17 | Panama |
| Trachymyrmex zeteki (10) | AL050513-4 | Panama |
| Acromyrmex octospinosus (11) | UGM020518-5 | Panama |
| Acromyrmex octospinosus (12) | CC031210-22 | Panama |
| Acromyrmex echinatior (13) | CC031212-1 | Panama |
| Acromyrmex echinatior (14) | CC031209-2 | Panama |
| Streptomyces griseus (15) | NRRL B-2165 | |
| Nocardiodes sp. (16) | A.dentigerum AL050511-10 | Panama |
| Pseudonocardia saturnae (17) | NRRL B-16172 | |
| Pseudonocardia halophobica (18) | NRRL B-16514 | |
| Pseudonocardia thermophilia (19) | NRRL B-1978 | |
| Within- Acromyrmex Petri dish bioassay | ||
| Acromyrmex niger (A) | CC030327-2 | Argentina |
| Acromyrmex hispidus fallax (B) | SP030327-1 | Argentina |
| Acromyrmex hispidus fallax (C) | UGM030327-2 | Argentina |
| Acromyrmex laticeps (D) | UGM030330-4 | Argentina |
| Acromyrmex echinatior (E) | 291 | Panama |
| Acromyrmex echinatior (F) | 292 | Panama |
| Acromyrmex echinatior (G) | 295 | Panama |
| Acromyrmex echinatior (H) | CC031212-1 | Panama |
| Acromyrmex octospinosus (I) | CC011010-4 | Panama |
| Acromyrmex octospinosus (J) | CC031210-22 | Panama |
| Acromyrmex octospinosus (K) | ST040116-1 | Panama |
| Acromyrmex octospinosus (L) | UGM020518-5 | Panama |
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.