Blackman, M.W. 1916 Sap-eating insects.. Bulletin of the New York State College. 16: 93-112.

Notes: Insects mentioned include Aspidiotus, Lepidosaphes ulmi, Chionaspis pinifoliae, Chionaspis furfura, Aulacaspis rosae, Gossyparia spuria, Pulvinaria innumerabilis, Lecanium nigrofasciatum and Toumeyella liriodendri.