Estudio de los estafilínidos de un viejo robledal submediterráneo de Navarra (norte de España) (Coleoptera, Staphylinidae)

Laburpena

The results of the study of the rove-beetles collected in a very open stand of sub-mediterranean oaks of Navarre (north Spain) are presented. Three types of traps were used for field sampling: two different kinds of flying-interception traps (single-van window traps and free hanging crossed-vans window traps), plus multifunnel traps. All of them were placed on living oaks both, attached to trunks or hanging from low branches. Altogether we collected 820 individuals belonging to 55 species of 30 genera and 8 sub-families (Aleocharinae, Tachyporinae, Staphylininae, Omalinae, Oxytelinae, Paederinae, Steninae and Phloeocharinae). 45 of the species are new for the fauna of the Comunidad Foral de Navarra region. Most abundant (dominant) species were Quedius cruentus and Bolitochara lucida representing, altogether, the 40 % of the total number of individuals. 22 species (40%) were single or doubletons. According to the estimators Chao1 & 2 and Jackknife 1 & 2 the recorded species represent between the 77% and the 87% of the total rove-beetles fauna potentially found in this locality combining the three types of traps. Multifunnel traps were significantly more effective than flying-interception ones to detect rove-beetle species. 36,5% of the studied especies are saproxylic, and 38% not saproxylic. Remaining 25.5% were considered as data deficient in this respect.