We report the introduction of the central and eastern European helicid land snail Caucasotachea vindobonensis in North America. It was first recorded from Rensselaer County in the state of New York in 2015 by a community scientist. From 2016 to 2020, 14 additional occurrences in Rensselaer County, neighbouring Albany County and an imprecisely localized site in the Adirondack Mountains were recorded by community scientists. In 2020, the species was newly recorded at two sites in Schoharie County, NY, and at three sites in Québec, one of them approximately 700 km to the north of the initial record. Partial mitochondrial cox1 sequences from Rensselaer differ from an eastern Ukrainian haplotype only in a single substitution. Therefore, a Ukrainian origin for this introduction is likely, although not certain: the Rensselaer haplotype also differs in only two substitutions from a more widespread haplotype known from Ukraine, Hungary, Slovakia, Czechia, Serbia, and Bulgaria. An environmental niche model of the species based on occurrence data from central and eastern Europe indicated that a large region from the northern east coast to the midwestern United States is suitable for C. vindobonensis. The Canadian occurrences may indicate that the North American lineage is able to survive colder winters than predicted by the environmental niche model. Caucasotachea vindobonensis is not listed as a pest in Europe and it is unlikely to become an agricultural pest in North America as it prefers rotting plant material over living parts of plants, but its impact on native organisms can hardly be predicted.

我们报告了中欧和东欧螺旋蜗牛Caucasotachea vindobonensis在北美的引入。它于 2015 年由一位社区科学家在纽约州伦斯勒县首次记录。从 2016 年到 2020 年，社区科学家在伦斯勒县、邻近的奥尔巴尼县和阿迪朗达克山脉的一个不精确定位的地点记录了另外 14 起事件。2020 年，在纽约州斯科哈里县的两个地点和魁北克的三个地点新记录了该物种，其中一个地点距离初始记录以北约 700 公里。部分线粒体cox1Rensselaer 的序列与乌克兰东部单倍型的不同之处仅在于单个替换。因此，尽管不确定，但这种引入的乌克兰起源很可能：Rensselaer 单倍型也与在乌克兰、匈牙利、斯洛伐克、捷克、塞尔维亚和保加利亚已知的更广泛的单倍型有两个不同之处。基于中欧和东欧发生数据的物种环境生态位模型表明，从东海岸北部到美国中西部的大片区域适合C. vindobonensis。加拿大的事件可能表明北美血统能够在比环境生态位模型预测的更冷的冬天中生存。高加索果 在欧洲未被列为害虫，在北美不太可能成为农业害虫，因为它更喜欢腐烂的植物材料而不是植物的活体部分，但它对本地生物的影响很难预测。