The genus Krsticiella Levkov was previously known only from the basins of Lakes Ohrid and Prespa, and from Lake Baikal. Examination of type materials of diatoms originally described by Niels Foged from the North Slope of Alaska revealed that Navicula lenis Foged and N. meadeensis Foged belong to Krsticiella, to which they are formally transferred here. One of these species, K. lenis, is also found in thermokarst tundra lakes of the Kolyma Lowland in Northeastern Siberia. Several illustrations in previously published floras of Pliocene and Pleistocene diatoms of Eurasia indicate wider past distributions of Krsticiella species. The current restriction of this genus to non-glaciated regions of the Arctic and large ancient lakes in temperate zone indicates that it is a Cenozoic relict.

中文翻译：

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两种 Krsticiella 在白令岛的出现表明该属是新生代遗存

Krsticiella Levkov 属以前仅在奥赫里德湖和普雷斯帕湖盆地以及贝加尔湖中被发现。对 Niels Foged 最初描述的来自阿拉斯加北坡的硅藻类型材料的检查发现 Navicula lenis Foged 和 N. meadeensis Foged 属于 Krsticiella，它们被正式转移到这里。这些物种之一，K. lenis，也在西伯利亚东北部科雷马低地的热岩溶苔原湖中发现。先前发表的欧亚大陆上新世和更新世硅藻植物群中的几个插图表明 Krsticiella 物种过去的分布范围更广。目前该属仅限于北极非冰川区和温带大型古湖泊，表明它是新生代遗存。