INVENTORY OF ARTHROPODOLOGIC FAUNA ASSOCIATED WITH WHITE COCHINEAL,  Parlatoria blanchardiTargioni-Tozzeti  ON TWO VARIETIES OF THE PALM DATE IN OUARGLA

H BENAMEUR-SAGGOU; M.A IDDER; H CHELOUFI

H BENAMEUR-SAGGOU Université KASDI Merbah OUARGLA, Laboratoire de Recherche sur la Phoeniciculture "Phoenix", Algérie. Faculté des Sciences de la Nature et de la Vie
M.A IDDER Université KASDI Merbah OUARGLA, Laboratoire de Recherche sur la Phoeniciculture "Phoenix", Algérie. Faculté des Sciences de la Nature et de la Vie
H CHELOUFI Université KASDI Merbah OUARGLA, Laboratoire de Recherche sur la Phoeniciculture "Phoenix", Algérie. Faculté des Sciences de la Nature et de la Vie

Keywords: Inventory, associated fauna, white scale, variety of date, biological control

Abstract

The inventory of the fauna associated with the white scale Parlatoriablanchardi by using two methods of capture (hype and hand) , allows us to inventory 16species which 31.25 % are Coleoptera followed by Hymenoptera with percentage of 25 . the highest total wealth is recorded for the month of December and April , while the largest average wealth is reported for the DegletNour variety with high levels of infestation by white scale (Sm = 12.50 ± 1.04) . Centesimal frequencies captured species show that Cybocephalussuminillum, Pharoscymnusovoideus and Pharoscymnusnumidicusare the most abundant and that for the two varieties of dates and at different levels of infestation by the pest. These species of beetles are alsothe most consistent with their frequency of occurrence varied between 50 and 66.67 %. The diversity of feet DegletNour and Ghars varieties by white scale associated fauna is quite important and it is in equilibrium.