© Benaki Phytopathological Institute
        
        
          Milonas & Partsinevelos
        
        
          22
        
        
          trol (Daane
        
        
          et al
        
        
          ., 2005; Dahlsten
        
        
          et al
        
        
          ., 2005;
        
        
          Huerta
        
        
          et al.
        
        
          , 2011; Sime
        
        
          et al
        
        
          ., 2004).
        
        
          Cultural practices and tree health can
        
        
          also affect the psyllid population and the
        
        
          extent of damage
        
        
          . With tolerant varieties,
        
        
          infrequent irrigation and nitrogen fertiliza-
        
        
          tion, tree stress can be reduced and avoid
        
        
          damage (Paine
        
        
          et al
        
        
          ., 2006). Systemic insecti-
        
        
          cides provide control sometimes, but
        
        
          gener-
        
        
          ally, their effectiveness in the U.S.A. is con-
        
        
          sidered
        
        
          inappreciable and foliage sprays are
        
        
          not recommended as natural enemies can
        
        
          be harmed (Paine
        
        
          et al
        
        
          ., 2006).
        
        
          
            P.S.:
          
        
        
          After finalizing the manuscript for publication
        
        
          and uploading, a paper about the occurrence of
        
        
          Gly-
        
        
          caspis brimblecombei
        
        
          in Greece was published (Tsag-
        
        
          karakis
        
        
          et al.,
        
        
          2013).
        
        
          
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          , 133: 315-317.
        
        
          Received: 2 October 2013; Accepted: 19 January 2014