Pellizzari, G., Porcelli, F., Convertini, S., & Marotta, S. (2012). Description of nymphal instars and adult female of Kermes vermilio Planchon (Hemiptera, Coccoidea, Kermesidae), with a synopsis of the European and Mediterranean species. Zootaxa, 3336(1), 36–50. https://doi.org/10.11646/zootaxa.3336.1.2