Sanguinicola Plehn, 1905 comprises 26 species that collectively infect fishes from 8 orders (Cypriniformes, Characiformes, Siluriformes, Esociformes, Salmoniformes, Labriformes, Centrarchiformes, and Perciformes). Its revision is warranted because several species assigned to the genus could represent new genera, nucleotide sequences are wanting, many species have incomplete descriptions, and types for most species are missing or of poor quality. Herein, we emend Sanguinicola based on morphology and the first nucleotide-based phylogenetic analysis that includes multiple sequences from morphologically identified adult specimens. We describe Sanguinicola plehnae Warren and Bullard n. sp. from the heart of northern pike, Esox lucius Linnaeus, 1758 from Russia; provide supplemental observations of Sanguinicola volgensis (Rašín, 1929) McIntosh, 1934 from the heart of sabrefish (type species), Pelecus cultratus (Linnaeus, 1758) Berg, 1949 from Russia; describe Sanguinicola cf. volgensis from the heart of ide, Leuciscus idus (Linnaeus, 1758) Berg, 1949 from Russia; and describe Pseudosanguinicola occidentalis (Van Cleave and Mueller, 1932) Warren and Bullard n. gen., n. comb. from the heart of walleye, Sander vitreus (Mitchill, 1818) Bailey, Latta, and Smith, 2004 from eastern North America. Sanguinicola plehnae differs from its congeners by having lateral tegumental spines that total 118–122, are small (3% of body width), and protrude 2–3 µm from the tegument (lacking associated conical protrusion) as well as by having a large testis (>40% of body length). Sanguinicola volgensis differs from its congeners by having posteriorly directed lateral tegumental spines encased in a tegumental conical protrusion as well as by having an ovoid egg. Specimens of S. cf. volgensis differ from those of S. volgensis by having a body that is 5–6× longer than wide (vs. 2–3× in S. volgensis) and <90 lateral tegumental spines (vs. >95). Pseudosanguinicola Warren and Bullard n. gen. differs from Sanguinicola by having densely transverse rows of lateral tegumental spines (vs. a single column of large spines). The phylogenetic analysis utilizing the large subunit ribosomal DNA (28S) failed to reject monophyly of Sanguinicola.

Sanguinicola  Plehn，1​​905，包括 26 个物种，共同感染 8 个目的鱼类（鲤形目、鲹形目、鲶形目、鲀形目、鲑形目、唇形目、中央形目和鲈形目）。它的修订是有必要的，因为分配给该属的几个物种可能代表新属，缺乏核苷酸序列，许多物种的描述不完整，并且大多数物种的类型缺失或质量较差。在此，我们根据形态学和第一个基于核苷酸的系统发育分析修正了Sanguinicola ，其中包括来自形态学鉴定的成年标本的多个序列。我们描述了Sanguinicola plehnae Warren 和 Bullard n。sp。来自北方梭子鱼Esox lucius Linnaeus 的心脏，1758 年来自俄罗斯；提供来自剑鱼（模式种）心脏的Sanguinicola volgensis (Rašín, 1929) McIntosh, 1934、 Pelecus cultratus (Linnaeus, 1758) Berg, 1949 来自俄罗斯的补充观察；描述Sanguinicola cf. 来自 ide 中心的volgensis ， Leuciscus idus (Linnaeus, 1758) Berg，1949 年来自俄罗斯；并描述Pseudosanguinicola occidentalis (Van Cleave 和 Mueller, 1932) Warren 和 Bullard n. 将军，n. 梳子。来自白眼斑眼鱼的心脏，Sander vitreus（Mitchill，1818）Bailey、Latta 和 Smith，2004 年来自北美东部。Sanguinicola plehnae与其同类的不同之处在于，其侧被皮刺总数为 118-122 个，较小（占体宽的 3%），并且从外皮突出 2-3 µm（缺乏相关的圆锥形突出），并且具有较大的睾丸（> 身体长度的 40%）。Sanguinicola volgensis与其同类的不同之处在于，其具有被包裹在外皮圆锥形突出物中的向后定向的侧外皮刺，以及卵圆形的卵。S.的标本 volgensis与S. volgensis的不同之处在于，它的身体长度是宽度的 5-6 倍（相对于S. volgensis 的2-3 倍）和 <90 个侧皮刺（相对于 >95 个）。Pseudosanguinicola Warren 和 Bullard n. 将军 与Sanguinicola的不同之处在于具有密集的横向行外侧皮膜刺（相对于单列大刺）。利用大亚基核糖体 DNA ( 28S )的系统发育分析未能排除Sanguinicola 的单系性。