S. Mahunka szerk.: Folia Entomologica Hungarica 56. (Budapest, 1995)

wasps in question are living, feeding and also preying on in open vegetation like the meadow. The rest of the specimens of both species shares among the three other vegetation layers, i.e. in closed vegetation of the oak forest, where the wasps are mainly nesting (see Table 5, too). Table 5. Height and time of collecting data of the Vespoidea species in 1987 Species of Vespoidea Quercetum petraeae-cerris 25-27 m 12-14 m 0-3 m Festucion 0-1 m Ancistrocerus dusmetiolus (Strand, 1914) Ancistrocerus gazella (Panzer, 1798) Vespula germanica (Fabricius, 1793) Vespula rufa (Linnaeus, 1758) Vespula vulgaris (Linnaeus, 1758) 06.14: 1 Ç 10.09: 4? 10.09: 1 ? 09.26:2? Polistes nympha (Christ, 1791) Stenodynerus chevrieranus (Saussure, 1856) Vespa crabro crabro Linnaeus, 1758 06.06-22: 1 ? 09.12:2? 06.06-22: 1 ? 06.06-22: 2 Ç 09.04: 1 ? 09: 1 6 08.07: 1 09.01: 1 22: 1 10.04: 1 05: 1 06: 1 ? 07: 1 § 08: 1$ 09: 1 ? 05.28:1 ? 06.15: 1 ? 10.01: 1 6 09.22: 1 ? 10.06: 1 ? 07: 1 ? 09: 3? 09.04: 1 09: 1 06.21: 1 6 08.23: 1 d 10.09: 1 ? Total number of species: 9 Total number of specimens: 38 Number of species taken only above the canopy (25-27 m): 1 in the canopy (12-14 m): in the shrub + herb layer (0-3 m): 2 in the meadow (0-1 m): 2 Species trapped in four layers: 1 in three layers (25-27,0-3,0-1 m): 1 in two layers (12-14, 0-3 m): 2