Cockerell, T.D.A. 1895dd Scale insects liable to be introduced into the United States.. Garden and Forest 8: 513.

Notes: Injurious species listed as already introduced into the U.S. include Icerya purchasi, Gossyparia ulmi, Dactylopius adonidum, D. citri, Orthezia insignis, Asterolecanium quercicola, Pollinia pollini, Lecanium persicae, L. juglandis, L. hemisphaericum, L. oleae, L. hesperidum, Aspidiotus nerii, A. ficus, A. aurantii, Mytilaspis citricola, M. gloverii, M. pomorum, Aspidiotus perniciosus, Chionaspis citri, C. biclavis, Aulacaspis rosae, Diaspis amygdali, Phenacoccus aceris and Parlatoria pergandii; species listed that are native or probably native include Pulvinaria innumerabilis, Lecanium pruinosum, L. ribis, L. tulipiferae, L. fitchii, Aspidiotus uvae, A. ancylus, A. juglans-regiae, Chionaspis furfurus, C. ortholobis and Aspidiotus rapax; discussion of the threat of new introductions.