EPPO Global Database

EPPO Reporting Service no. 06 - 2011 Num. article: 2011/139

Situation of Trioza erytreae in Madeira (PT)

In 1994, the presence of Trioza erytreae (Hemiptera: Triozidae – EPPO A1 List - psyllid vector of citrus huanglongbing) was reported for the first time in Madeira (PT). Intensive surveys were carried out and eradication measures (including insecticide treatments every 15 days) were implemented in the affected areas. In addition, growers were given detailed information on how to recognize the pest and control it. Until 1998, T. erytreae was well contained, even though the number of affected trees was slowly rising. In 1999, the pest started spreading to other areas and by 2008 the whole island was affected. Today, no specific treatments are applied to control T. erytreae (treatments are made against citrus pests in general). However, the NPPO of Portugal stressed that it is prohibited to move citrus plants from the island of Madeira and that no plant passports can be issued. Annual surveys carried out in all the other parts of the Portuguese territory have showed that T. erytreae only occurs in Madeira.
The situation of Trioza erytreae in Portugal can be described as follows: Present, restricted to Madeira only.


NPPO of Portugal (2011-06).