Aphid Parasitoids in the Sub-Antarctic (Hymenoptera, Aphidiidae) By Petr Stary Institute of Entomology, Czechoslovak Academy of Sciences and Michael Vogel Fachbereich Biologie/Zoologie, PhiHpps Universität Marburg Abstract Aphidius subantarcticus sp. n., a presumed parasitoid of the zphid Jacksonia papülata Theo, from the Falkland Islands is described. It is classif ied as a member of a new faunal complex of parasitoids associated with the subantarc-tic tundra. A comparison of the aphid parasitoids occuring in the subarctic and subantarctic areas shows that exten-sive Information has been achieved in the tundra and forest-tundra zone of the holarctic region, while the finding of A. subantarcticus is the first record in a similar floral zone of the southern hemisphere. Introduction This account presents results of the examination of aphid parasitoid material collected by M. Vo-gel in the course of the project "Zur Ökologie antarktischer Landinsekten" carried out on South Geor-gia and on the Falkland Islands during December 1981 to April 1982''". Material and methods Aphid and parasitoid material waS mostly obtained from pitfall traps (plastic beakers with a top diameter of 7 cm and a volume of ca. 200 ml, containing a mixture of formaldehyde [7 %], water and a detergent) set out in several lo-calities in the outlying areas of Port Stanley: Port Stanley: pitfall traps, 17.3. 1982-23.3. 1982 in a meadow at the boundary of the "Live Firing Area" of the Royal Marines. The vege'tation consists mainly of different grass species, which were heavily grazed by sheep (see fig. 1). Port Stanley: pitfall traps, 17.3. 1982-23. 3. 1982 inside the "Live Firing Area". The Vegetation consists mainly of different grass species (i. e. Poa sp., Festuca sp.).Juncus sp., Rostkovia sp. a.nd Acaena magellanica were identi-fied from the other plants. Port Stanley: band collection, 26. 12. 1981 Animals swept by net from grass at the boundary of the "Live Firing Area" (as above where pitfall traps were set out). '■" The research was supported by the Deutsche Forschungsgemeinschaft 25
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