Osaka Museum of Natural History, Nagai Park, Higashi-Sumiyoshi, Osaka 546-0034 Japan. .
Misaki Marine Biological Station, Graduate School of Science, The University of Tokyo,1024 Koajiro, Misaki, Miura, Kanagawa238-0025 Japan. .
Zootaxa. 2022 Jun 30;5159(3):393-413. doi: 10.11646/zootaxa.5159.3.5.
Three new species of the amphipod family Aoridae Stebbing, 1899 were collected from the bottom of a 40400 m depth in Sagami Bay, central Japan. Aora biarticulata sp. nov. is characterized by the accessory flagellum with 2 articles, the weakly setose male gnathopod 1 and the male gnathopod 2 with setose carpus and propodus. Aoroides sagamiensis sp. nov. has a distinctive male gnathopod 1 with poorly setose basis and heavily setose merus. Grandidierella gracilis sp. nov. has stridulating ridges on the carpus of the male gnathopod 1. This new species can be distinguished from its related congeners by the teeth arrangement on the male gnathopod 1 carpus, the poorly setose antennae, the sparsely setose posterior margins of the pereopods 6, 7 bases, and the ordinary form of the male gnathopod 2.
三种新的等足目 Aoridae Stebbing，1899 科的物种从日本相模湾的 40400 米深处的海底采集到。双关节 Aora biarticulata sp. nov. 的特征是附属触角有 2 个节，雄性第一对颚足的须状较弱，第二对颚足的腕节和掌节有须状。相模湾 Aoroides sp. nov. 的雄性第一对颚足的基节具很少的刚毛，而腕节和掌节具很多的刚毛。纤细的 Grandidierella gracilis sp. nov. 的雄性第一对颚足的腕节上有摩擦脊。这个新种可以通过雄性第一对颚足的腕节上的牙齿排列、触角的刚毛较少、第六和第七对步足的后缘基部的刚毛稀疏以及第二对颚足的普通形态与相关的同属种区分开来。
