Abstract
Weekly samples of the cutworm,Agrotis ipsilon Rott. larvae were collected for 3 successive season 1983/84–1985/86 from 3 Governorates in middle Egypt to survey and evaluate the role of parasitoids in suppressing the pest population.
Two gregarious internal larval parasitoids were recorded,Apanteles ruficrus Hal. andMeteorus rubens Nees. (Hymenoptera, Braconidae). Percentages of parasitism were estimated. They reached 20.2, 22.2 and 24.7% in seasons 1983/84, 1984/85 and 1985/86, respectively, with an average of 22.5% (10.3%A. ruficrus and 12.2%M. rubens). The highest rates of parasitism were recorded in March and April.
Zusammenfassung
Wöchentliche Aufsammlungen der Raupen vonA. ipsilon während der Jahre 1983/84 bis 1985/86 im mittleren Ägypten erbrachten zwei gregäre Endoparasitoiden,Apanteles ruficrus Hal. undMeteorus rubens Nees. (beide Hym., Braconidae). Sie erreichen zusammen in den 3 Jahren 20,2, 22,2 und 24,7%, i.M. 22,5% (A. ruficrus=10,3%, undM. rubens=12,2%). Die höchsten Parasitierungsraten wurden im März und April festgestellt.
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El-Heneidy, A.H., Hassanein, F.A. Survey of the parasitoids of the Greasy Cutworm,Agrotis ipsilon Rott. (Lepidoptera, Noctuidae) in Egypt. Anz. Schadlingskde., Pflanzenschutz, Umweltschutz 60, 155–157 (1987). https://doi.org/10.1007/BF01907546
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DOI: https://doi.org/10.1007/BF01907546