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

Besides the braconid wasps a long series of hymenopterous insects has been captured. In the present account the sawflies (Symphyta) and the majority of the aculeate wasps (Aculeata) are surveyed from the viewpoints of their dispersion and phenology in the forest during the vegetation season of 1987. A total of twenty-nine sawfly specimens fell into the traps shared between two families (in brackets the species as well as the specimen numbers are given): Tenthredinidae (15 species - 28 specimens) and Xiphydriidae (1 species - 1 specimen), i.e. 16 sawfly species have been trapped (see Table 1). It is somewhat surprising that the sawflies were captured equally in a low species and low specimen numbers whereas oak forests in general are rich in sawflies. We are unable to find a reasonable explanation why the sawflies remain in such a low quantity. Contrarily to the sawflies the aculeate wasps have been trapped in a much greater number regarding both species and specimens. The representatives of the following superfamilies were captured with an addition of the numbers of the species and specimens of each taxon, the taxa are ranged in systematic sequence: Scolioidea 5 species 12 specimens Chrysidoidea 2 3 Pompiloidea 14 68 Vespoidea 9 38 Formicoidea 12 29 Sphecoidea 30 143 Apoidea 22 52 Aculeata 94 species 345 specimens Consequently, ninety-four aculeate wasp species had been captured during the vegetation season of 1987 in the Síkfőkút oak forest. The species number 94 may be considered as an average species assemblage to be captured with Malaise trap during one season in an oak forest in Hungary. We are quite convinced that the species (and specimen) number of the aculeate wasps would be increased at least twice to three times if the trapping procedure would be extended for a few (i.e. for two to four-five) years. Also the indicated quantity would be significantly greater if more Malaise traps were set up in each vegetation layer than in 1987. Taking into consideration these reflections we are on the standpoint that the achieved trapping results render an adequate basis for their interpretations because the dispersional and phenological observations cover, at least approximately, the true relations prevailing in nature. * * * Remarks. - 1. The aculeate wasps were identified and the most essential trapping results were summarized by the junior author, Zsolt Józan; the analysis of the trapping results, the compilation of the Tables 1 to 8 as well as the drafting of the present account was accomplished by the senior author, Jenő Papp. The English text was reviewed by Lajos Zombori.