Data on phenology, parasitism and control of citrus leaf miner, Phyllocnistis citrella Stainton (Lepidoptera, Gracillariidae), in Greece

Abstract

Research was conducted to determine whether Phyllocnistis citrella Stainton (Lepidoptera, Gracillariidae) has any preference in attacking either the upper or the lower surface of the leaves of citrus trees. This investigation took place during the year 1999 at Marathon (Attica, Central Greece) while studying the dispersal of P. citrella on the leaves of three different types of citrus trees. Data on the overwintering and parasitism of P. citrella from different areas in Greece are also presented during the years 1999-2002. In addition, the effect of P. citrella infestation on imidacloprid-treated and untreated tangerine trees was comparatively studied. The parasitoids collected were Pnigalio sp. (Hymenoptera, Eulophidae), Cirrospilus sp. (Hymenoptera, Eulophidae), Neochrysocharis formosa (Westwood) (Hymenoptera, Eulophidae) and Citrostichus phyllocnistoides (Narayanan) (Hym., Eulophidae).Cilj istrazivanja je da li Phyllocnistis citrella Stainton (Lepidoptera, Gracillariidae) pokazuje vecu preferencu prema gornjoj ili donjoj povrsini listova citrusnih stabala. Ova istrazivanja su sprovedena u periodu 1999-2002 na lokalitetima Galatas (Trizina, Southern Greece), Skala (Lakonia, Southern Greece), Marathon i Kifissia (Attica, Central Greece). Takodje na lokalitetu Marathon, efekat P. citrella, na tretiranim (imidachloprid) i netretiranim citrusnim stablima je istrazivan. Nivo zarazenosti listova citrusa varira od 0.68 - 1.03 larve P. citrella po listu i nije nadjena statisticki znacajna razlika u pogledu preference P. citrella na gornju i donju povrsinu listova. Medjutim, znacajne razlike su konstatovane u zarazenosti donje i gornje povrsine listova razlicitim larvalnim stadijumima. Detektovano je prisustvo mladjih larvalnih stadijuma na gornjoj lisnoj povrsini, a starijih na donjoj. Sa P. citrella sakupljeni su i parazitoidi: Pnigalio sp. (Hym., Eulophidae), Cirrospilus sp. (Hym., Eulophidae), Neochrysocharis formosa (Westwood) (Hym., Eulophidae) i Citrostichus phyllocnistoides (Narayanan) (Hym., Eulophidae). .