Reference
Stefanie Fischnaller, Martin Parth, Manuel Messner, Robert Stocker, Christine Kerschbamer, Yazmid Reyes-Dominguez, Katrin Janik (2017): Occurrence of different Cacopsylla species in apple orchards in South Tyrol (Italy) and detection of apple proliferation phytoplasma in Cacopsylla melanoneura and Cacopsylla picta (Hemiptera: Psylloidea) – Cicadina = Beiträge zur Zikadenkunde – 17: 37 - 51.