Zombie ant behavior. Focal animal observation periodogram of ants infected by Ophiocordyceps unilateralis s.l. The blue horizontal bars mark the observation period, the red triangles mark moment of biting, the vertical bars mark spasm events and the grey diamonds the falling off events. For four individuals that belong to focal animals 1-9 only the biting time was recorded. The biting time was recorded for 16 ants but only 15 triangles are visible as two ants bite at exactly the same time (12:05). Inset picture shows a dead ant on a leaf with the fungal stalk and spore body that emerged from the head.