A brief biography of I. Sonehara (28 January 1921-12 May 2000), a science teacher and the author of “The life history o/Epitheca bimaculata sibirica on Mt. Yatsugalake" is followed by his odonatological bibliography (1962-1996; 66 titles). IMATO SONEHARA, the author of “The life history of Epitheca bimaculata sibirica on Mt Yatsugatake” and a co-editor of “Dragonflies of Nagano prefecture”, passed away at the age of 79, on 12 May 2000, in consequence of brain and leg injuries received in a traffic accident in July 1999, while he was riding a motorbike, heading for a place of dragonfly faunal survey at a village (Misato-mura) adjacent to his home town.