Dussumieria albulina (Fowler 1934 ), formerly regarded as a junior synonym of Dussumieria acuta Valenciennes 1847 , is shown to be a valid species and is redescribed on the basis of 29 specimens, including the holotype. Although the two species resemble each other morphologically, sharing body scales with numerous longitudinal striae posteriorly, a deep body, 26 or fewer lower gill rakers on the first gill arch, and 15 or fewer branchiostegal rays, the former is distinguished by lacking parasphenoid teeth (vs. distinct conical teeth on parasphenoid in D. acuta ), higher gill raker counts (total gill rakers on first gill arch 33–41 vs. 30–38), a rather slender body (20.6–24.4% SL vs. 23.4–28.2% SL in individuals of D. acuta > 75 mm SL), and melanophores scattered on the 3rd to 9th (vs. 1st to 5th) pectoral-fin rays from the uppermost ray. Analysis of the mitochondrial cytochrome oxidase I (COI) gene in both species showed them to be separated by 12% mean p -distance. A redescription of D. acuta is also provided.

中文翻译：

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Dussumieria acuta Valenciennes 1847 和 Dussumieria albulina (Fowler 1934) 的重新描述，两种有效的彩虹沙丁鱼（Clupeiformes：Dussumieriidae）

Dussumieria albulina (Fowler 1934 )，以前被认为是 Dussumieria acuta Valenciennes 1847 的次要同义词，被证明是一个有效的物种，并根据 29 个标本进行了重新描述，包括正模标本。虽然这两个物种在形态上彼此相似，共享体鳞，后部有许多纵纹，体深，第一鳃弓上有 26 个或更少的下鳃耙，以及 15 个或更少的鳃鳍条，但前者的特征是缺少副蝶骨。与 D. acuta 中蝶骨上明显的锥形牙齿相比），更高的鳃耙数量（第一鳃弓上的总鳃耙 33-41 vs. 30-38），相当细长的身体（20.6-24.4% SL vs. 23.4-28.2 D. acuta > 75 mm SL 个体中的 % SL，以及散布在最上面射线的第 3 至第 9（与第 1 至第 5）胸鳍射线上的黑素细胞。对两个物种线粒体细胞色素氧化酶 I (COI) 基因的分析表明，它们之间的平均 p 距离为 12%。还提供了 D. acuta 的重新描述。