Delavault, R., Royer, M., & Duvigneau, C. 1969 Chronologie de l'embryogenèse d'Icerya purchasi Mask (Insecte, Coccide). [Chronology of the embryogenesis of Icerya purchasi Mask.]. Annales d'Embryologie et de Morphogénèse 3(1): 71-80.

Notes: Embryos and larvae of Icerya purchasi can develop only if temperature is between 10 and 30 degrees C, with 25 being the ideal.