Shirshov Institute of Oceanology; Russian Academy of Sciences; 36 Nakhimovsky; Prosp Moscow 117997; Russia.
Zootaxa. 2024 Feb 14;5410(3):419-433. doi: 10.11646/zootaxa.5410.3.9.
Two new species of the calanoid copepod family Augaptilidae are described from specimens collected from bathypelagic depths of the Arctic Ocean. The female of Euaugaptilus verae sp. nov. can be distinguished from other congeneric species by 1) the Md tooth arrangement, 2) the structure of Mx1, and 3) the lack of external spines on Re2 and 3 of the female P5. The female of Alrhabdus antjeboetiusae sp. nov. can be distinguished from the only species of this genus, A. johrdeae Grice, 1973, by 1) the shape of the rostrum, 2) absence of paired spinal protrusions at the posterior corners of the last pedigerous somite, 3) position of spermatheca on the genital double-somite, 4) the Md tooth arrangement, and 5) P5 endopod 1-2 lacking modified medial setae. Both species were collected in the deepest regions of the Eurasian and Canadian Basins of the Arctic Ocean in the water layers between 1000 m and the seafloor.
两种新的桡足类科——澳光鱼科的物种，是从北冰洋深海采集的标本中描述的。新种 Euaugaptilus verae 雌性可通过以下特征与其他同种物种区分开来：1）Md 牙齿排列；2）Mx1 的结构；3）雌性 P5 的 Re2 和 3 上没有外部刺。新种 Alrhabdus antjeboetiusae 雌性可通过以下特征与该属唯一的物种 A. johrdeae Grice，1973 区分开来：1）喙的形状；2）最后一个胸节后角无成对的脊状突起；3）生殖双体节上精囊的位置；4）Md 牙齿排列；5）P5 内肢 1-2 缺乏修饰的内侧刚毛。这两个物种都在北冰洋的欧亚和加拿大盆地的最深区域采集到，水深在 1000 米至海底之间的水层。
