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Zur Morphologie und Entwicklung von Bracon instabilis Marsh. (Hym., Braconidae), eines Parasiten der Kartoffelmotte, Phthorimaea operculella Zell. (Lep., Gelechiidae) in Ägypten

Studies on morphology and development of Bracon instabilis Marsh. (Hym., Braconidae), an ectoparasite of the Potato Tuber Moth, Phthorimaea operculella zell. (Lep., Gelechiidae) in Egypt

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Abstract

Bracon instabilis Marshal is an ectoparasite attacking the larvae ofP. operculella in Egypt. According to available literatures, this is the first study onB. instabilis.

The laboratory rearing of this parasite was undertaken on the third and fourth larval instars ofP. operculella and the method was mentioned in details. Certain aspects of the morphology of the immature and adult stages were given. The durations of the immature stages of the parasite were estimated at 15 and 25°C and 60±5% R.H. The total durations of the immature stages (from egg to adult) were 39.62 and 11.19 days at 15 and 25°C, respectively.

Zusammenfassung

Die Laborzucht vonBracon instabilis erfolgte in den Drittund Viertraupen der Kartoffelmotte,P. operculella. Die Zuchtmethodik wird beschrieben. Die Morphologie aller Entwicklungsstadien des Parasiten wird in Wort und Bild dargestellt. Die Entwicklung der einzelnen Stadien wurde bei 15 und 25°C konstanter Temperatur und 60% rel. Luftfeuchte festgestellt. Die Gesamtentwicklung betrug bei 15°C=39,6, bei 25°C=11,2 Tage.

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Literaturverzeichnis

  • Abbas, M. S. T., 1981: The natural enemies of the potato tubermoth,Phthorimaea operculella Zell. in Egypt (Lepidoptera: Gelechiidae). Ph. D. Thesis, Faculty, of Agriculture, Cairo University, 193 pp.

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Author notes

  1. M. S. T. Abbas

    Present address: Department of Biological Control, Plant Protection Research Institute, Agricultural Centre, ET-Dokki, Cairo, Egypt

Authors and Affiliations

  1. Department of Biological Control, Plant Protection Research Institute, Agricultural Centre, ET-Dokki, Cairo, Egypt

    M. S. I. El-Dakroury

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  1. M. S. T. Abbas
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  2. M. S. I. El-Dakroury
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Abbas, M.S.T., El-Dakroury, M.S.I. Zur Morphologie und Entwicklung von Bracon instabilis Marsh. (Hym., Braconidae), eines Parasiten der Kartoffelmotte, Phthorimaea operculella Zell. (Lep., Gelechiidae) in Ägypten. Anz. Schadlingskde., Pflanzenschutz, Umweltschutz 56, 133–134 (1983). https://doi.org/10.1007/BF01906905

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  • DOI: https://doi.org/10.1007/BF01906905

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