Complex sentence: Banded sugar ants are the dominant group of nocturnal ants in their range, the workers mostly encountered at dusk when they are foraging for food on marked trails or on "Casuarina" and "Eucalyptus" trees.
Split into simpler sentences: Banded sugar ants are the dominant group of nocturnal ants in their range. Workers are mostly encountered at dusk when they are foraging for food on marked trails or on "Casuarina" and "Eucalyptus" trees.