for A. echinatior, equating to 20 conidia/mm2 body surface,
while 1×107 conidia/ml was used for P. dives, equating to
370 conidia/mm2 body surface. For each of the five species/
gland closure combinations (P. dives with acidopore open or
closed; A. echinatior with metapleural gland closed, venom
gland closed, or both glands open), 60 ants were treated
with Metarhizium and 60 with the control solution (15 in
each case from each of four colonies).