Aloricate ciliates are essential members of the pelagic microbial foodweb and are easy to identify in samples, yet the taxonomic database is insufficient and many species have yet to be described. Individuals from the Phylum Ciliophora Doflein, 1901, Order Choreotrichida Small and Lynn, 1985 were collected from the epilimnion (upper 20m) of Lake Ontario in the spring, summer and autumn of 1990 and 1991. They were fixed and silver-stained. Here we describe the morphospecies of five species from the genus Rimostrombidium Jankowski, 1978: Rimostrombidium kyoskota n.sp., Rimostrombidium pentagrammum n.sp., Rimostrombidium trioeumekes n.sp., Rimostrombidium paravelox Kahl, 1932 n.comb., Rimostrombidium brachykinetum Krainer, 1995 and one from the genus Pelagostrobilidium Petz et al., 1995: Pelagostrobilidium limnospirale n.sp. Increasing the taxonomic database allows for a more detailed monitoring of the biodiversity and energy transfer within a system, which in turn can better inform ecosystem management decisions.

中文翻译：

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从加拿大安大略湖收集的六种浮游淡水纤毛虫的分类学描述

Aloricate ciliates 是远洋微生物食物网的重要成员，很容易在样本中识别，但分类数据库不足，许多物种尚未被描述。1990 年和 1991 年春季、夏季和秋季从安大略湖的表皮层（上部 20m）收集 Phylum Ciliophora Doflein，1901，Order Choreotrichida Small 和 Lynn，1985 的个体。它们被固定并被银染。在这里，我们描述了来自 Rimostrombidium Jankowski 属的五个物种的形态种，1978 年：Rimostrombidium kyoskota n.sp.、Rimostrombidium pentagrammum n.sp.、Rimostrombidium trioeumekes n.sp.、Rimostrombidium paravelox Kahl、1932 Rimostrombidium kyoskota n.sp.、Rimostrombidium pentagrammum n.sp.、Rimostrombidium paravelox Kahl、1932 , 1995 和 Pelagostrobilidium Petz et al., 1995: Pelagostrobilidium limnospirale n.sp.