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Andris Bukejs, Konstantin Nadein. 2014.
Psyllototus groehni sp. nov. (Coleoptera: Chrysomelidae), a new species of the paleoendemic genus from Baltic amber.
Baltic Journal of Coleopterology, 2014, 14(2): 163-166.
http://www.bjc.sggw.pl/arts/2014v14n2/05.pdf