Yato Takuji, Heemstra Elaine
Kobe Senior High School, Shironoshitadori 1-5-1, Nadaku, Kobe, 6570804, Japan..
Zootaxa. 2019 Dec 6;4706(1):zootaxa.4706.1.8. doi: 10.11646/zootaxa.4706.1.8.
A new species of deepwater gurnard, Pterygotrigla (Otohime) madagascarensis sp. nov. is described, based on two specimens collected on the upper continental slope south of Madagascar, in the southwestern Indian Ocean. The new species belongs to the tropical Indo-Pacific subgenus Otohime in having a short rostral projection, short posttemporal spine, long opercular spine and no cleithral spine. It is most similar to P. (O.) multipunctata, and P. (O.) urashimai, in having no large blotch on the first dorsal fin, a jet-black blotch and no white ocellus on the inner pectoral-fin surface, with no scales on the breast and front of the pectoral-fin base. However, the new species differs from the latter two species by the combination of the following characters: first dorsal-fin spines 7, second dorsal-fin rays 12, dusky rays on the inner pectoral-fin surface, one row of blackish botches on second dorsal fin, and no papillae on the dorsal surface of oral cavity. A key is provided for the twelve Pterygotrigla species now in the subgenus Otohime.
基于在印度洋西南部马达加斯加岛以南的上大陆坡采集的两个标本，描述了一种新的深水鲂鮄，即马达加斯加鲂鮄（Pterygotrigla (Otohime) madagascarensis sp. nov.）。新物种属于热带印度-太平洋亚属Otohime，其吻部突出短，后颞棘短，鳃盖棘长且无肩棘。它与多斑鲂鮄（P. (O.) multipunctata）和浦岛鲂鮄（P. (O.) urashimai）最为相似，第一背鳍上无大斑，胸鳍内表面有一个墨黑色斑且无白色眼斑，胸部和胸鳍基部前方无鳞片。然而，新物种与后两个物种的区别在于以下特征的组合：第一背鳍棘7根，第二背鳍鳍条12根，胸鳍内表面有暗色鳍条，第二背鳍上有一排黑色斑点，口腔背表面无乳突。文中还提供了Otohime亚属目前已知的12种鲂鮄的检索表。
