[2][3][4] Like all members of the family Diaspididae in Pinnaspis the females are primarily sessile, molting twice before reaching the adult stage.

[5] The first instar, referred to as a crawler, due to the presence of small legs and the dispersal function of this stage.

The second instar and adult female lack legs and wings, and have greatly reduced to absent antenna and eyes.

The male undergoes four molts before reaching the adult stage, which is legged, winged, and has antenna and eyes.

[8] P. strachani is recorded to feed on over 60 genera, most commonly found on, Citrus, Cocus and Hibiscus.