Recent sampling efforts and examinations of museum material provided evidence for a complex of species within Acroteriobatus leucospilus (Norman, 1926). The present manuscript contains a redescription of A. leucospilus involving the syntypes and additional material, as well as formal descriptions of two new species of Acroteriobatus Giltay, 1928. All specimens of both new species were found in the western Indian Ocean. Individuals of the first new species, hereafter referred to as Acroteriobatus andysabini sp. nov., were identified originating from Madagascar, and specimens of the second new species, hereafter referred to as Acroteriobatus stehmanni sp. nov., were only found off Socotra Islands at the junction between the Gulf of Aden and the Arabian Sea. Both new species appear to be endemic to the respective region and allopatric to A. leucospilus and occur in coastal waters to at least 80 m and 43 m depth, respectively. They differ from A. leucospilus in a number of characteristics including the maximum size and coloration in fresh. Acroteriobatus andysabini sp. nov. is a large species growing to more than 100 cm total length (TL) and with elongated bluish-gray spots on snout giving “stripe-nosed” appearance; numerous small bluish-gray spots on pectoral, pelvic, dorsal, and caudal fins; brown spots on trunk and fin bases; lateral tail folds striped orange and white; and ventral surface largely white but with a V-shape pattern of faint to dark speckled black spots on snout tip. Acroteriobatus stehmanni sp. nov. is a small species growing to ~62 cm TL and with sparse patterning with small bluish-gray circular spots confined to snout tip, posterior pectoral-fin margins, a pair on midbody, and few on posterior pelvic-fin margins, rather indistinct small to larger dark brown spots, and lateral tail folds and ventral surface white. Acroteriobatus leucospilus is a medium-sized species growing to ~96 cm TL and with patterning similar to A. andysabini sp. nov. but ventral surface uniformly white and lateral tail folds white or striped blue and brown. Taxonomical differences include nasal lamellae counts (42–48 in A. andysabini sp. nov. vs. 43–48 in A. stehmanni sp. nov. vs. 37–41 in A. leucospilus), snout angle (76–85° vs. 71–77° vs. 68–81°), and dorsal head length (24.2–33.5% vs. 17.2–22.8% TL vs. 24.0–29.2% TL). A key to the species of Acroteriobatus is given for the first time.

最近对博物馆材料的采样工作和检查为Acroteriobatus leucospilus内的复杂物种提供了证据（诺曼，1926 年）。本手稿包含对A. leucospilus的重新描述，涉及同型和其他材料，以及对1928 年的Acroteriobatus Giltay的两个新物种的正式描述。这两个新物种的所有标本均在西印度洋发现。第一个新物种的个体，以下称为Acroteriobatus andysabini sp。11 月，被确定为起源于马达加斯加，以及第二个新物种的标本，以下称为Acroteriobatus stehmannisp. 11 月，仅在亚丁湾和阿拉伯海交界处的索科特拉群岛附近发现。这两个新物种似乎是各自地区的特有种，是A. leucospilus 的异域种，分别出现在至少 80 m 和 43 m 深的沿海水域。它们在许多特征上与A. leucospilus不同，包括新鲜时的最大尺寸和着色。八爪鱼sp. 十一月 是一种大型物种，总长度 (TL) 超过 100 厘米，鼻子上有拉长的蓝灰色斑点，呈现“条纹鼻子”外观；胸鳍、腹鳍、背鳍和尾鳍上有许多小蓝灰色斑点；躯干和鳍基部有褐色斑点；侧尾褶皱橙色和白色条纹；和腹面大部分是白色的，但在鼻子尖端有一个 V 形图案，有微弱到深色的斑点黑点。Acroteriobatus stehmanni sp. 十一月 是一种体长约 62 cm TL 的小型物种，图案稀疏，小蓝灰色圆形斑点仅限于吻尖、胸鳍后缘、身体中部一对，腹鳍后缘很少，相当模糊的小到较大的暗褐色斑点，尾侧褶皱和腹面白色。Acroteriobatus leucospilus是一种中等大小的物种，生长到 ~96 cm TL，图案类似于A. andysabini sp。十一月 但腹面均匀白色，尾侧褶皱白色或蓝褐色条纹。分类学差异包括鼻薄片计数（在42-48 A. andysabini属十一月与43-48在A. stehmanni属十一月与37-41在A. leucospilus），吻角（76-85°VS . 71–77° vs. 68–81°），以及背头长度（24.2–33.5% vs. 17.2–22.8% TL vs. 24.0–29.2% TL）。首次给出了Acroteriobatus物种的钥匙。