La mouche de l'olive,Dacus oleae gmel. et ses parasites en Corse,en 1959 et 1960

Summary Three known ectoparasites ofD. olea are found in Corsica. These are Chalcidians:Pnigalio mediterraneus, a very active primary parasite,Eurytoma rosae, primary parasite of little importance,Eupelmus urozonus, primary parasite (some-times pseudo-endoparasites) secondary or tertiary, very active and which appear to hinder the action ofP. mediterraneus. Myopites stylata (Dipt. Trypetidae onInula viscosa) does not seem to constitute a host forE. urozonus. The action of the indigenous parasites lessens towards the end of summer and could be relayed by introducing foreign parasites.

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I.N.R.A., Station de Zoologie Centre de Recherches agronomiques du Sud-Est.