Update of the situation of Popillia japonica in Switzerland
In Switzerland, Popillia japonica (Coleoptera: Rutelidae – EPPO A2 List) was first found in Ticino in June 2017 (EPPO RS 2017/160) and adults have been regularly trapped since then (EPPO RS 2019/157). In July 2020, for the first time, adults of P. japonica have been found in high numbers in two different vineyards directly on plants (Vitis vinifera), and also in traps, in the municipality of Genestrerio-Mendrisio (Canton of Ticino). No significant damage has been observed in the infested vineyards so far. Official measures have been taken.
The pest status of Popillia japonica in Switzerland is officially declared as: Transient, actionable, under eradication.
Sources
NPPO of Switzerland (2020-07).