We report for the first time the presence of the globally distributed and extremely polyphagous pest species—the crescent-marked lily aphid (or mottled arum aphid) (Neomyzus circumflexus L.) (Insecta, Hemiptera, Aphididae)—in Greenland. This species, of alien origin, was found on the ornamental plant Salix arbuscula L., imported from Denmark and sold in the main supermarket of Nuuk, the capital of Greenland. As this species is not the preferred host plant of N. circumflexus, the possibility must be considered that the aphids were not imported along with S. arbuscula from the mainland but were transferred from other imported ornamental plants sold in the store. Supermarkets selling decorative plants may be becoming reservoirs of alien species, facilitating the movement of aphids and other alien species that “hop on, hop off,” to borrow a phrase from the tourism industry. As unintentional introductions present the greatest threats to the Arctic ecosystems, a stricter approach to regional biosecurity needs to be considered and non-native species control and eradication should be implemented.

中文翻译：

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随上随下：格陵兰外来物种新月斑百合蚜（Neomyzus circleflexus）（昆虫纲、半翅目、蚜科）的首次记录

我们首次报告了格陵兰岛存在全球分布且极其杂食性的害虫物种——新月标记的百合蚜虫（或斑纹蚜虫）（Neomyzus circleflexus L.）（昆虫纲、半翅目、蚜科）。这种外来物种是在观赏植物 Salix arbuscula L. 上发现的，从丹麦进口并在格陵兰首府努克的主要超市出售。由于该物种不是回旋花的首选寄主植物，因此必须考虑该蚜虫可能不是与 S. arbuscula 一起从大陆进口的，而是从商店出售的其他进口观赏植物中转移而来的。出售装饰植物的超市可能会成为外来物种的储存库，促进蚜虫和其他“跳上跳下”的外来物种的移动。”借用旅游业的一句话。由于无意引入对北极生态系统构成最大威胁，因此需要考虑对区域生物安全采取更严格的方法，并应实施非本地物种控制和根除。