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Population fluctuations on parasites ofLepidosaphes beckii Newm. andCeroplastes floridensis Comst.

  • M. B. Hafez
  • A. M. El-Minshawy
  • A. R. Donia
Article

Abstract

Lepidosaphes beckii Newm. (Hom., Diaspididae) andCeroplastes floridensis Comst. (Hom., Coccidae), are dominant pests on citrus trees (Citrus sinensis), in Alexandria district. The population fluctuations of the parasites of both insects were studied during a whole year.

Six species of hymenopterous primary parasites together with one secondary parasite were found onL. beckii. These species wereAphytis lepidosaphes Compere,A. bispanicus Compere,Encarsia (Prospaltella) spp.,Aspidiotiphagus citrinus Craw,Aphytis lingnanensis Compere, and the secondary parasiteMarietta javensis Howard.A. lepidosaphes was the most common parasite onL. beckii.

ConcerningC. floridensis, four species of hymenopterous parasites were found, namelyTetrastichus ceroplastae (Girault),Aspidiotiphagus citrinus Craw,Metophycus flavus (Howard), andMicroterys flavus (Howard).

Keywords

Plant Physiology Plant Pathology Population Fluctuation Citrus Tree Citrus Sinensis 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Zusammenfassung

Lepidosaphes beckii Newm. (Hom., Diaspididae) undCeroplastes floridensis Comst. (Hom., Coccidae) sind im Raum Alexandria, Ägypten, dominante Schädlinge anCitrus-Bäumen (Citrus sinensis). Bei einer einjährigen Untersuchung ihrer Parasiten wurden 6 Hymenopteren-Arten als Primärparasiten vonL. beckii gefunden:Aphytis lepidosaphes Comp.,A. bispanicus Comp.,Encarsia (Prospaltella) spp.,Aspidiotiphagus citrinus Craw,Aphytis lingnanensis Comp. sowie der SekundärparasitMarietta javensis Howard. Unter ihnen warA. lepidosaphes der Hauptparasit.

BeiC. floridensis wurden 4 Hymenopteren-Arten als Parasiten festgestellt:Tetrastichus ceroplastae (Gir.),Aspidiotiphagus citrinus Craw,Metaphycus flavus (Howard) undMicroterys flavus (Howard).

Die genannten Parasitenarten werden näher betrachtet.

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Copyright information

© Verlag Paul Parey 1987

Authors and Affiliations

  • M. B. Hafez
    • 1
  • A. M. El-Minshawy
    • 1
  • A. R. Donia
    • 1
  1. 1.Department of Plant Protection, Faculty of AgricultureUniversity of AlexandriaAlexandriaEgypt

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