<p style="text-align: justify;"><strong>Aim</strong>: Surveys conducted between July and September 2012 in Quebec vineyards revealed the presence of the spotted wing drosophila (SWD), <em>Drosophila suzukii</em> Matsumura, just before harvest.</p><p style="text-align: justify;"><strong>Methods and results</strong>: Red and white grapevine cultivars from four vineyards were surveyed for leafhoppers by using a tapping method. Unexpectedly, a total of 30 SWD adults were collected from red grapevine cultivars, <em>i. e.</em>, Marechal Foch, Gamay and Seyval Noir. Furthermore, a total of 101 SWD emerged from bunches selected in these vineyards and placed under laboratory conditions. No SWD were found in white cultivars.</p><p style="text-align: justify;"><strong>Conclusion</strong>: This is the first mention of SWD in grapevines grown for wine in Quebec.</p><p style="text-align: justify;"><strong>Significance and impact of the study</strong>: Spreading of SDW across Quebec vineyards may lead to important yield losses. Insecticide treatments need to be adapted to address this new entomological challenge.</p>

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The wine-making region of southern Quebec in Canada experiences growing conditions that are unique in northeastern North America. After an outbreak of insect pests in 1996, a study of insect groups that may include potential pests or beneÞcial species was initiated. This article reports on the weevil diversity and abundance during three consecutive years of sampling (1997Ð1999) in two vineyards. All weevils were collected using pitfall and ßight intercept traps. In total, 3,176 specimens were collected, representing 73 species in three families of Curculionoidea. The family Curculionidae was the most species rich, especially the subfamilies Ceutorhynchinae, Curculioninae, and Entiminae. Four of the species recorded are known to feed on the genus Vitis (Vitaceae) in North America: Madarellus undulatus (Say), Barypeithes pellucidus (Boheman), Otiorhynchus ovatus (L.), and Otiorhynchus sulcatus (F.). Of these, O. sulcatus is thought to represent the greatest potential threat based on adult abundance at one of the sites and the negative impact of this species in other wine-making regions in North America. Four species [Ceutorhynchus oregonensis Dietz, Pelenomus waltoni (Boheman), Rhinoncus perpendicularis (Reiche), and Sphenophorus minimus Hart] are recorded in Quebec for the Þrst time. A signiÞcant number of weevils collected during this study are adventive species associated with agroecosystems of northeastern North America.

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Leafhoppers (Hemiptera: Cicadellidae) are pests of many temperate crops, including grapevines ( Vitis species). Uncontrolled populations can induce direct and indirect damage to crops due to feeding that results in significant yield losses and increased mortality in infected vineyards due to virus, bacteria, or phytoplasmas vectored by leafhoppers. The main objective of this work was to determine the diversity of leafhoppers found in vineyards of the three main Canadian production provinces, i.e., in British Columbia, Ontario, and Quebec. Approximately 18,000 specimens were collected in 80 commercial vineyards from 2006 to 2008. We identified 54 genera and at least 110 different species associated with vineyards, among which 22 were predominant and represented more than 91% of all the leafhoppers. Species richness and diversity were estimated by both Shannon’s and Pielou’s indices. For each province, results indicated a temporal variation in species composition. Color photographs provide a tool to quickly identify 72 leafhoppers commonly associated with vineyards.