Abstract
ABSTRACTMite populations on grapevines in five Canberra district vineyards during 1991‐1993 were characterised by large numbers of phytoseiids and small, non‐damaging populations of the pests grapeleaf blister mite, Colomerus vitis (Pagenstecher), and grapeleaf rust mite, Calepitrimerus vitis (Nalepa). Six phytoseiid species (Typhlodromus doreenae Schicha, T. dossei Schicha, T. australicus (Womersley), Amblyseius waltersi Schicha, A. elinae Schicha and Phytoseius fotheringhamiae Denmark and Schicha) were recorded. T. doreenae was the dominant species and occurred in all vineyards. P. fotheringhamiae was abundant in a single vineyard and T. dossei occurred in small numbers in two vineyards. the other species were represented by single individuals. Implications of these results for viticultural mite management based on biological control are discussed.
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