Thelohanellus magnacysta n. sp. (Bivalvulida: Myxobolidae) infects the skeletal muscle of blacktail shiner, Cyprinella venusta Girard, 1856 (Cypriniformes: Cyprinidae) in Bull Creek, Chattahoochee River Basin, eastern Georgia. Although numerous members of ThelohanellusKudo, 1933 have overlapping myxospore dimensions with the new species, it differs from all nominal congeners by polar filament coil number and polar capsule width as well as by lacking a mucous envelope, iodinophilic vacuole, and sutural markings. With the use of novel primers for Myxozoa, a phylogenetic analysis of the small subunit ribosomal DNA (SSU rDNA) suggests that the new species shares a recent common ancestor with a clade of cyprinid-infecting species of Myxobolus Bütschli, 1882 (Bivalvulida: Myxobolidae) and Thelohanellus. Consistent with other published research concerning the systematics of Thelohanellus, this result suggested that Thelohanellus and Myxobolus are polyphyletic and need revision. Histological sections of infected blacktail shiners confirmed that myxospores were only found within a plasmodium and only infected skeletal muscle and that plasmodia were encapsulated by a granuloma comprising varying degrees of acute granulomatous inflammation. The new species is the fourth of Thelohanellus reported from North America and the first reported from Cyprinella, as well as the first myxozoan described from the blacktail shiner.

中文翻译：

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ThelohanellusKudo的一个新物种，1933年（Myxozoa：Bivalvulida）感染了黑尾胫骨的骨骼肌，Cyprinella venusta Girard，1856年（Cypriniformes：Cyprinidae）在佐治亚州的查塔胡奇河流域。

大叶黄麻 sp。（Bivalvulida：Myxobolidae）感染格鲁吉亚东部查塔胡奇河流域的布尔溪（By Creek）的黑尾光泽的骨骼肌Cyprinella venusta Girard，1856（Cypriniformes：Cyprinidae）。尽管1933年ThelohanellusKudo的许多成员的新孢子虫具有重叠的孢子尺寸，但它与所有标称同源物的区别在于极丝的线圈数和极膜的宽度，以及缺少粘液包膜，嗜碘液泡和缝合标记。通过使用新型的Myxozoa引物，对小亚基核糖体DNA（SSU rDNA）的系统发育分析表明，该新物种与最近感染了塞浦路斯的MyxobolusBütschli物种的支系具有共同的祖先，1882年（Bivalvulida：Myxobolidae）和Thelohanellus。与有关Thelohanellus的系统学的其他已发表研究一致，该结果表明Thelohanellus和Myxobolus是多系的，需要修订。受感染的黑尾发光物的组织学切片证实，粘孢子仅存在于疟原虫中，仅感染了骨骼肌，且疟原虫被肉芽肿包裹，所述肉芽肿包括不同程度的急性肉芽肿性炎症。该新物种是北美报道的Thelohanellus的第四种，而Cyprinella报道的是第一个，也是黑尾光泽描述的第一个粘虫。受感染的黑尾发光物的组织学切片证实，粘孢子仅存在于疟原虫中，仅感染了骨骼肌，且疟原虫被肉芽肿包裹，所述肉芽肿包括不同程度的急性肉芽肿性炎症。该新物种是北美报道的Thelohanellus的第四种，而Cyprinella报道的是第一个，也是黑尾光泽描述的第一个粘虫。受感染的黑尾发光物的组织学切片证实，粘孢子仅存在于疟原虫中，仅感染了骨骼肌，且疟原虫被肉芽肿包裹，所述肉芽肿包括不同程度的急性肉芽肿性炎症。该新物种是北美报道的Thelohanellus的第四种，而Cyprinella报道的是第一个，也是黑尾发光物描述的第一个粘虫。