In 2004 the saproxylic beetles fauna was investigated in the proposed National Park Defileul Jiului. 115 saproxylic beetles were found in the area. Amongst them seven are list- ed in Appendix II of the Fauna-Flora-Habitat Directive (92/43/EWG) : Rhysodes sulcatus (F.,1787), Cucujus cinnaberinus (SCOP.,1763), Osmoderma eremita (SCOP.,1763), Lucanus cervus (L.,1758), Cerambyx cerdo L.,1758, Rosalia alpina (L.,1758) and Morimus funereus MULS.,1863. Osmoderma eremita and Rosalia alpina are further priority species of the Directive. New records for Romanian fauna were Eubrachium hispidulum BREMI-WOLF, 1855 and Metaclisa azurea (WALTL,1839). Virgin forest relict species sensu stricto in the recorded spectrum are: Rhysodes sulcatus (F.,1787), Omoglymmius germari (GAN- GLB.,1892), Peltis grossa (L.,1758), Nematodes filum (F.,1801), Otho spondyloides (GERM.,1818), Eurythyrea austriaca (L.,1767), Dicerca berolinensis (HBST.,1779), Bothrideres bipunctatus (GMEL.,1790), Mycetophagus decempunctatus F.,1801, Rhopalocerus rhondanii (VILLA,1863), Neomida haemorrhoidalis (F.,1787), Platydema dejeanii CAST.BRULLE,1831, Diaclina testudinea (PILL.MITT.,1783), Neatus picipes (HBST.,1797), Metaclisa azurea (WALTL,1839), Tenebrio opacus DUFT.,1812, Menephilus cylindricus (HBST.,1784), Osmoderma eremita (SCOP.,1763) and Cerambyx cerdo L.,1758. The sampling of saproxylic species in the proposed National Park indicates a unique fauna relict of Europe-wide importance. It is expected that this area is home to the complete saproxylic beetle fauna of the natural forest communities of this region. The Romanian and probably the Ukrainian beech forests are the last real reference sites for complete wood beetle communities of the temperate central European forest communities.