Abstract
The parasitoids (Hymenoptera: Braconidae: Aphidiinae) of Macrosiphoniella del Guercio (Hemiptera: Aphididae) from the western Palaearctic region are reviewed and keyed. The host associations and distribution of each species are summarized. Aphidius stigmaticus sp. nov. reared from Macrosiphoniella tanacetaria on Tanacetum polycephalum, which is another member of the Macrosiphoniella aphid parasitoid guild from high-mountain habitats in western Iran, is described in the present contribution. Some taxonomic problems within Macrosiphoniella parasitoid guilds are discussed as well.
Acknowledgements
Financial support for the research was provided by grant no. 86-19, University of Zabol. This study was also supported by the Ministry of Science and Technological Development of the Republic of Serbia (43001) and by the Entomology Institute Project Z50070508 (Academy of Sciences of the Czech Republic).