Pellizzari, G. 1989 Gli insetti delle piante officinali. 2. Nota: I fitofagi del Thymus, con particolare riferimento alle cocciniglie. [Insects of medicinal plants. 2. Note: The phytophagous complex of Thymus with particular reference to scale insects.]. Redia 72(2): 567-579.

Notes: Abstract: Among the species reviewed are seven scale species: Puto pilosellae, Peliococcus tritubulatus, Parthenolecanium corni, Eriococcus munroi, Cerococcus cycliger, Planchonia arabidis, Quadraspidiotus labiatarum and Rhizaspidiotus canariensis; brief descriptions; hosts; distributions.