Danzig, E.M. 1999 [Mealybugs of the genus Puto Signoret (Homoptera, Pseudococcidae) of Russia and neighboring countries.]. Entomologicheskoe Obozrenye 78: 79-91.
Notes: The English translation of this paper was published in Entomological Review 79: 279-289 . Key to 12 species of Puto provided: P. megriensis, kondarensis, superbus, borealis, caucasicus, tubulifer, orientalis, graminis, pini, pilosellae, vaccinii. Four poorly known species are redescribed and figured. Lectotypes of 8 nominal species are designated. New synonymy is established: P. superbus (Leon.) = kiritshenkoi (Borchs.), syn. n.; P. pilosellae (Sulc) = ferrisi (Kir.), clematidis (Matesova), syn. n.