To add to its mystery P. otwayensis weaves highly stereotyped ladder - shaped webs, where they stand facing down after sunset, waiting for
preys which will be
caught by using the ladder as a trap — a behavior which was already described in detail by now retired arachnologist Mike Gray (Australian Museum) for the only known other
species of this genus, P. carraensis.
To be successful, the animal must use a combination of genetics and observation of other members of their
species to learn successful strategies for finding,
catching and killing of live
prey.