A brief biographic outline and appreciation of odonatol, work (1922-1983) of M.A. LIEFTINCK. the first Honorary President of the International Odonatological Society (SIO). formerly Director of the Zoological Museum & Laboratory, Bogor, Indonesia and, later. Head of the so-called "neuropteroid" Department, Rijksmuseum van Natuurlijke Historie, Leiden, written on the occasion of his 80th birthday (born: Feb. 18, 1904: Amsterdam). The annotated checklist of taxa he has introduced in Odon., and his bibliography are published in Odonalologica 13 (1984): 21-50.