First report of Tetranychus evansi in France
During prospections done in the south of France near the Spanish border (Pyrénées-Orientales), Tetranychus evansi (Acari: Tetranychidae – EPPO Alert List) was found on Solanum nigrum at two localities (Argelès-sur-Mer, Saint-Nazaire). The potential invasiveness of this species has been studied, mainly considering climatic factors. As a result, it was found that the pest could establish outdoors in a narrow band around the Mediterranean coast and Corse. For other parts in Southern France, the risk appears lower. These areas could also be invaded but colder winters or lower summer temperatures would probably limit the spread of the pest. It was also recognized that T. evansi has the potential to colonize glasshouses all over France.
Migeon (2005) Un nouvel acarien ravageur en France: Tetranychus evansi Baker et Pritchard.
Phytoma – La défense des Végétaux, n° 579, 38-42.