First detailed record of Jikradia olitoria (Hemiptera: Cicadellidae) in the Swiss southern Alps and evaluation of its current potential as a vector of 16SrV-phytoplasmas

Jikradia olitoria Say is a Nearctic leafhopper that was recently identified in several European countries. Given its role as the vector of phytoplasmas associated with Grapevine Yellows diseases (GYD) in its native range, its presence in European vineyard agroecosystems could represent an important phytosanitary risk.
Systematic monitoring conducted over two consecutive years (i.e., 2023 and 2024) using chromotropic traps in seven sites allowed to confirm its widespread presence in the southern Alps, both inside vineyards as well as in the nearby forest edge compartment. Moreover, a subset of the collected specimens was analyzed to test potential infection by phytoplasmas associated with Flavescence dorée.

Jikradia olitoria Say 是一种新北区（Nearctic）叶蝉，近期在多个欧洲国家被发现。鉴于该虫在原生分布区中是与葡萄黄化病（Grapevine Yellows Diseases, GYD）相关植原体（phytoplasmas）的传播媒介，其在欧洲葡萄园农业生态系统中的定殖可能构成重大植物检疫风险。
研究团队于2023年至2024年连续两年，在7个监测点布设色粘式诱捕器开展系统监测，证实该叶蝉在南阿尔卑斯山区域广泛分布，不仅见于葡萄园内部，也栖息于周边林缘生境。此外，研究人员对部分采集的标本进行了检测，以验证其是否携带与葡萄金黄化病（Flavescence dorée）相关的植原体。