Changes

**Metacercariae form inside the ants

**Metacercariae form inside the ants

**The final host is infected when ants are eaten at grazing

**The final host is infected when ants are eaten at grazing

**The presence of metacercariae in the nerve ganglia of the ants makes them revert to a primitive behaviour pattern, whereby they cling onto herbage overnight instead of retreating to the nest

**The presence of metacercariae in the nerve ganglia of the ants makes them revert to a primitive behaviour pattern, whereby they cling onto herbage overnight instead of retreating to the nest enhancing the likelihood of being eaten by grazing animals

***This enhances the likelihood of being eaten by grazing animals