P. argus is a nocturnal species, taking to cover during the day.

It is a mainly nocturnal species which can be attracted to light by night.

Usually the sun (or moon for nocturnal species) is the only light source and flying that way will result in a practically straight line.

It is a nocturnal species, and has been described as "conspicuous".

They are a primarily nocturnal species that is usually active around dawn and dusk.

It is a nocturnal species, remaining underground during the day.

This is a nocturnal species that is much more active at night.

In the dark, preferably, since they were a nocturnal species.

It is a nocturnal species which only hunts at night.

It is a nocturnal species feeding largely on leaves, though they also eat some fruit.