Two new abyssal Harpiniinae Barnard & Drummond, 1978 (Amphipoda, Phoxocephalidae) from the Clarion-Clipperton Zone

Two new species of the phoxocephalid subfamily Harpiniinae are described from the easternmost sector of the Clarion-Clipperton Zone. The material examined was collected with epibenthic sledges during the projects ABYSSLINE- 2, MANGAN 2016 and MANGAN 2018 from depths ranging from 4133 to 4359 metres. Harpinia lobata sp. nov. is mainly characterized by: head anteroventral corner with a small projection; gnathopod 1 coxa anteroventrally produced; pereopod 6 basis with posterior proximal expanded lobe; and epimeron 3 posteroventral corner rounded.

Harpiniopsis pedro sp. nov. can be diagnosed by: head anteroventral corner with a large projection; mandible palp article 2 shorter than article 3; gnathopods 1–2 palm defined by a subacute hump; pereopod 6 basis with a posterior distal lobe reaching the apex of ischium; and epimeron 3 posteroventral corner produced as a slightly curved spine. Here, we provide the deepest record of the known Harpinia species and the first Harpiniopsis record from the Pacific abyssal plain.