Zur Hautflüglerfauna eines südbadischen Eichen-Hainbuchenmischwaldes (Hymenoptera) Von Hubert Hilpert Hilpert, H. 1989: Zur Hautflüglerfauna eines südbadischen Eichen-Hainbuchen-mischwaldes — Spixiana 12/1: S. 57—90 From 1983—1986 ca. 30000 specimens of Hymenoptera have been collected with ground-photo-eclectors in a mixed leaf-forest in the southern part of the Upper-Rhine-Valley (West Germany). The collections consists of about 760 species of 39 fa-milies. From these, 421 species have been determined. The most species-rich family are the Ichneumonidae (ca. 250 species), followed by Diapriidae (140). However, Ich-neumonidae comprise only about 8%, but Diapriidae 16,5% of all specimens. The latter family is the most abundant in this forest. Megaspilidae and Ceraphronidae to-gether comprise 19,5%, Chalcidoidea 23%, Braconidae 9% and Platygastridae 9,5%. Based on the number of collected species for every year, the species-richness of the Hymenoptera on the forest-ground has been estimated. Ca. 875 species of Hy-menoptera would occur in ground-photo-eclectors, if the examination would last for an unlimited duration. After 3 years, only about 66 % of all occuring ichneumonid species have been found, but more than 90 % of the diapriids. Diversities of both fa-milies show little differences, in spite of the different species-richness, and the diffe-rent member of species represented by only one specimen (Ichneumonidae 42%, Diapriidae 22 %). Both subfamilies of Diapriidae (Diapriinae and Belytinae) shov/ the same characteristics. The phenology of the abundant species is shovi^n. For some spe-cies, informations on the number of generations, hibernation and parasiting rates are given. The influence of the collecting method on sex ratio is discussed. If females are flightless, they seem to be rare. Abundance and species-richness are compared with the results of similar investigations in other sites. The effects of pesticides in two of the three examined areas are shown. Hubert Hilpert, Zoologische Staatssammlung München, Münchhausenstr. 21, D-8000 München 60, F.R.G. Inhaltsverzeichnis Abstract 57 Inhaltsverzeichnis 57 Einleitung 58 Untersuchungsgebiet 60 Methoden 60 Durchführung des Versuchs 61 Ergänzende Methoden 61 57
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