Abstract
This paper deals with the taxonomic composition of parasitoid assemblages reared from agromyzid leaf-miners of 28 species collected in Cordoba, Central Argentina. The relative representation of each parasitic family was estimated, taking into consideration their species richness and abundance. Sample size affected the total species richness in each complex, and also that of Eulophidae and Pteromalidae, indicating that not only size but also taxonomic structure of parasitic assemblages are influenced by sampling effort. 3 superfamilies and 5 families of Hymenoptera Parasitica were represented, with Eulophidae (Chalcidoidea) specifically and numerically dominant both in the total community of parasitoids and in the parasitic assemblages of individual hosts. Chrysonotomyia, Chrysocharis (Eulophidae), Halticoptera (Pteromalidae) and Phaedrotoma (Braconidae) were the most relevant genera in terms of number of species and number of specimens reared. The parasitoids obtained from samples taken in agroecosystems differed from the global spectrum of taxa mainly by showing a numerical dominance of Braconidae, despite a noticeable specific impoverishment of this family.
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