Introductions of macroalgae are becoming more common with increased surveillance and the use of molecular tools to unequivocally identify invaders. We here report two non-indigenous macroalgal species newly confirmed to be present in New Zealand. Pachymeniopsis lanceolata is an irregularly divided foliose blade, first detected in Lyttleton Harbour/Whakaraupō, South Island but here also reported from the North Island. It has known introductions from its native range in Pacific Asia to the Mediterranean, Atlantic and the eastern Pacific. The introduced cox 3 haplotype was also found in New Zealand, suggesting a secondary introduction from a previous introduced area, but we also found a novel haplotype in the North Island suggesting a case of multiple introductions. Fushitsunagia catenata , a recent segregate from Lomentaria, was also first detected in Whakaraupō and was initially identified as a species of Champia . Rbc L data shows that it belongs to F. catenata . This species is also of Asian origin and has been known to have been introduced to Spain, Mexico, and Australia. We provide morphological and reproductive descriptions of the species in New Zealand. Continued surveillance, and follow up monitoring, are needed to track the expansion and effects of these macroalgae on native biotas.

中文翻译：

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两种新引入新西兰的红色大型藻类：Pachymeniopsis lanceolata（K. Okamura）Y. Yamada（前S. Kawabata）和Fushitsunagia catenata Filloramo等GW Saunders

随着监测的增加和分子工具的使用，明确地确定入侵者，引入大藻类变得越来越普遍。我们在这里报告了两个新近证实存在于新西兰的非本地大型藻类物种。Pachymeniopsis lanceolata是一种不规则分裂的叶状叶片，首先在南岛的利特尔顿港/瓦卡拉波（Whakaraupō）发现，但北岛也有报道。它从其在亚太地区的原生地带到地中海，大西洋和东太平洋的已知介绍。在新西兰也发现了引入的cox 3单倍型，表明是从先前引入的区域进行的二次引入，但我们还在北岛发现了一种新颖的单倍型，表明有多次引入的情况。Fushitsunagia catenata，最近从Lomentaria分离出来，在Whakaraupō中也首次被发现，最初被鉴定为Champia的一种。Rbc L数据表明它属于F. catenata。该物种也起源于亚洲，已知已被引入西班牙，墨西哥和澳大利亚。我们提供了该物种在新西兰的形态和繁殖描述。需要持续监视和后续监视，以跟踪这些大型藻类对原生生物群的扩展和影响。