[1] There is a subspecies, P. beata rubrosignata, in which the elytral blotches are more yellowish and the marginal colouring is thicker and more reddish.

[1] Some other species in the genus resemble P. beata but can be distinguished by certain features: P. sexpustulata lacks the colored lateral skirt and P. octosignata has an entirely black pronotum.

[1] As a beetle, P. beata undergoes complete metamorphosis with the four life stages of egg, larva, pupa and adult.

[4] A large population of P. beata was detected on Eucalyptus nitens at Whitemans Valley, New Zealand in 2012.

In response, insecticides were applied both aerially and on the ground, and overwintering habitat was removed by stripping loose bark from host trees.