| population dynamics of cacopsylla melanoneura (homoptera: psyllidae), a vector of apple proliferation phytoplasma in northwestern italy. | apple proliferation is a phytoplasma-associated disease transmitted by insects causing serious damage and economic losses to apple orchards. investigations were carried out in 1999 and 2000 in northwestern italy to identify the vector of apple proliferation and to study its population dynamics. yellow sticky traps and beat tray samples revealed the presence of the psyllid cacopsylla melanoneura (forster) in eight apple orchards in the aosta valley. the species completes one generation per year; ... | 2002 | 12075998 |