We investigated species referred to as ‘Ahnfeltiopsis flabelliformis’ from the Far Eastern seas of Russia as well as Besa catenata (Yendo) M.S.Calderon & S.M.Boo from Mie Prefecture (Shima Peninsula, Japan, near to its type locality) morphologically and by analysis of sequences of plastid rbcL and mitochondrial COI-5P genes. Morphological and phylogenetic analyses showed that Ahnfeltiopsis flabelliformis does not occur in the Far Eastern seas. All algae previously identified as ‘A. flabelliformis’ from Russian waters belong to two morphologically and genetically distinct species that should be referred to the genus Besa as B. divaricata (Holmes) M.S.Calderon & S.M.Boo and B. japonica (Suringar) A.V. Skriptsova & S.Y.Shibneva, comb. nov. We found an unattached form of B. divaricata and named it as B. divaricata f. ahnfeltioides A.V.Skriptsova & S.Y.Shibneva based on its morphological and ecological features.

我们通过形态学并通过分析序列分析了来自俄罗斯远东海的称为' Ahnfeltiopsis flabelliformis '的物种以及来自三重县（日本志摩半岛，接近其类型所在地）的Besa catenata（Yendo）MSCalderon＆SMBoo的物种。质体rbc L和线粒体COI-5P基因。形态学和系统发育分析表明，远东海域未发生羊膜拟南吸虫。所有藻类先前认定为“ A. flabelliformis从俄罗斯水域”属于两种形态和遗传上不同的物种，应该被称为属贝萨为B.防风（福尔摩斯（Holmes））MSCalderon＆SMBoo和B. japonica（Suringar）AV Skriptsova＆SYShibneva，梳子。十一月 我们发现了独联体双歧杆菌的形式，并将其命名为双歧杆菌。基于其形态和生态特征的ahnfeltioides AVSkriptsova和SYShibneva。