Abstract
The phenology of the San Jose scale was studied in a heavily-infested almond orchard in northern Greece. It appears that the scale there completes 3 generations per year. The majority of the population hibernates as 1st instar larvae.
A series of releases were made using the introduced Hymenoptera parasiteProspaltella perniciosi Tower. Sampling results showed a very high mortality of the San Jose scale, Apart from the percentage due to climatic factors, the remainder is a result of the action of natural enemies.
A considerable part of this action is attributable to the local entomophagous insects and especially the predators, of whichCybocephalus fodori Endrody-Younga appears to be the key species. The rest is attributable to the action of the released populations ofP. perniciosi.
Résumé
Le pou de San José a été étudié dans un verger d'amandiers gravement infesté du Nord de la Grèce. La cochenille présente 3 générations par an. La majorité de la population hiverne au ler stade larvaire.
Des lâchers de l'hyménoptère parasite introduit,Prospaltella perniciosi Tower ont été réalisés. Les résultats de l'action des ennemis naturels.
Une part considérable de cette action est attribuable aux insectes entomophages locaux et particulièrement aux prédateurs, parmi lesquels,Cybocephalus fodori Endrodi-Younga paraît être l'espèce clef. Le reste est dû à l'action des populations deP. perniciosi qui ont été lâchées.
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The main part of this paper was presented during the International Symposium held in Budapest (15–20 August 1983).
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Katsoyannos, P.I., Argyriou, L. The phenology of the San Jose scaleQuadraspidiotus perniciosus [Hom.: Diaspididae] and its association with its natural enemies on almond trees in northern Greece. Entomophaga 30, 3–11 (1985). https://doi.org/10.1007/BF02372277
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DOI: https://doi.org/10.1007/BF02372277