Gavrilov-Zimin, I.A. 2003a [On the fauna and systematics of scale insects (Homoptera, Coccinea) of the middle zone of European Russia.].. Entomologicheskoe Obozrenye 82(1): 106-115.
Notes: A list of 58 species is given, one species is described as new to science. Longicoccus divnogoricus, sp.n., differs from the congeners in the presence of dorsal conical setae and the convex, sclerotized circuli. The taxonomy and biology of some species are discussed. A new synonymy is established: Trionymus perrisli (Signoret, 1875) = T. implicatus (Borchsenius, 1975), syn. n.