Pellizzari, Giuseppina, Francesco Porcelli, Stefano Convertini, and Salvatore Marotta. 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). Auckland, New Zealand:36–50. https://doi.org/10.11646/zootaxa.3336.1.2.