The fIrst draft version of this book, written in systematics of Neoptera) had two different editions English and named "Draft revision of supraspecies in Russian - in 1999 and in 2000 (Kluge 2000). taxa of Ephemeroptera (without Atalophlebiinae)," English version of this fIrst volume is also prepared, was prepared as an Internet publication in 1998; but not published yet. thanks to Dr. Michael Hubbard (Florida A & M Uni versity), it has been available from the web site "Ephemeroptera Galactica" since 1998. The second NEW TERMS, TAXA NAMES AND version, written in Russian and named "Revision of SYNONYMS supra-species taxa of Ephemeroptera (except for Atalophlebialfgl)," was prepared as an Internet publication in 2000; from 2001 till now it has been New terms: plesiomorphon (instead of wrongly available from the web site of Biological Faculty of used "plesion," p. 16); basitornal margin, tornoapical S-Petersburg University, http: //www. bio. pu. ruJwinl margin, amphitornal margin of wing or wing bud entomollKLUGEIEPHEMER -"content_. htm. Both (p. 31); tergalius (instead of formerly used "tergalia" versions contain the systematics of all mayflies or "tergalium," p. 35); caudalius, tricaudale, basitri except for Atalophlebialfgl. The present Volume 1 caudale, cercotractor (p. 38). does not contain the systematics of Turbanoculata For some morphological terms type taxa are (i. e. Baetidae auct. ) nor of all Leptophlebialfg1 (i. e. designated. Till now this was not practised, but in Leptophlebiidae auct."