Japanese beetle advances through Alpine vineyards and orchards

Japanese beetles have reached the Valle d'Aosta region, marking a significant northward expansion of the invasive pest across Italy's Alpine agricultural belt. According to AP News, the beetles (Popillia japonica) were documented in July consuming vine leaves in Pont-Saint-Martin, in the Valle d'Aosta region. The spread threatens not only Valle d'Aosta's wine production but also the apple orchards of neighbouring Trentino-Alto Adige, which depends on fruit cultivation as a pillar of its regional economy.

The pest's arrival in the Alps comes as farmers across northern Italy report mounting frustration with crop damage. AP News quoted Vittorio Costabloz, vice-president of a local agricultural association, describing the beetles' impact on vineyards and the broader economic consequences for the region. Japanese beetles, native to North America, feed voraciously on foliage and are difficult to control once established in a new territory. Their presence in the high valleys of Valle d'Aosta suggests the pest has overcome the Alpine barrier that previously isolated southern European agriculture from invasive species moving northward through the continent.