Background Testate amoebae are a polyphyletic group of protists living preferentially in soils, freshwaters and wetlands. These Protozoa have a worldwide distribution, but their presence and diversity in the Azores (a remote oceanic archipelago) is poorly known, with only twelve taxa recorded so far. The published information reflects occasional collections from sporadic field visits from naturalists to São Miguel Island, mainly in the nineteenth century. To overcome this limitation, a standardised survey was carried out on the Island, sampling different types of habitats from several localities to provide the distribution and information on species ecology of testate amoebae. New information In this study, 43 species of testate amoebae were recorded (within a total of 499 occurrences), belonging to two orders of Protista (26 Arcellinida and 17 Euglyphida). The most frequently occurring testate amoebae were Euglypha strigosa, Trinema lineare, Euglypha rotunda, Assulina muscorum and Cyclopyxis eurystoma. The most diverse genus was Euglypha (six species). A total of 38 species are new records for the Azores Archipelago. These data help to improve knowledge of the geographical distribution of testate amoebae in the northern hemisphere and their diversity in the Azores Archipelago.

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圣米格尔岛（亚速尔群岛）苔藓植物群落中的有遗嘱变形虫分布

背景 有睾变形虫是优先生活在土壤、淡水和湿地中的多系原生生物群。这些原生动物在世界范围内分布，但它们在亚速尔群岛（一个偏远的海洋群岛）的存在和多样性鲜为人知，迄今为止仅记录了 12 个分类群。发布的信息反映了博物学家对圣米格尔岛的零星实地考察的偶尔收集，主要是在 19 世纪。为了克服这一限制，在岛上进行了一项标准化调查，从几个地方对不同类型的栖息地进行抽样，以提供有关有遗嘱变形虫物种生态学的分布和信息。新信息 在这项研究中，记录了 43 种有遗嘱阿米巴（共 499 次），属于 Protista 的两个目（26 Arcellinida 和 17 Euglyphida）。最常见的有遗嘱变形虫是 Euglypha strigosa、Trinema lineare、Euglypha rotunda、Assulina muscorum 和 Cyclopyxis eurystoma。最多样化的属是Euglypha（六种）。亚速尔群岛共有38种新记录。这些数据有助于提高对北半球有遗嘱变形虫的地理分布及其在亚速尔群岛的多样性的认识。