The Greek red damsel is an early spring species, having a flight period extending from the last third of April to mid-June. Nothing is precisely known about the biology of this restricted species, but much can be inferred from what is known of its close relative P. nymphula. The larval stage is likely to run over one or two years and to include around 12 stadia. Larvae are expected to generally divide in two cohorts, one with a rapid development, the other with slower growth. They are hidden with the submerged plants and organic detritus at the bottom of small rivers. Larvae defend territories and become known through movements of their caudal appendages. Adult males stay in the close surrounding of their reproducing site and await females in a small territory constituted by a small perch and the close adjacent area, from where they push back other males. Territories change several times within a day, but are regularly reoccupied. Females oviposit in tandem with the male and lay their eggs in aquatic plant tissues, by making a small slit with their ovipositor. Sometimes, both male and female are completely submerged.