[2] It is an aggressive species of bee, when threatened it coils around the victim's hair and fur, in addition to nibbling the skin with its mandibles.

The chosen substrate and nest architecture are adapted to provide protection against predators and ensure necessary support.

Unlike the typical gradual deceleration and controlled landing observed in other flying insects, returning P. helleri workers accelerate as they approach the nest entrance.

This behavior is a unique defense mechanism thought to deter ambush predators at the nest entrance.

Remarkably, despite the high speed and impact of the crash-landing, the bees remain unharmed due to their small size.