Echinoderes pterus sp. n. showing a geographically and bathymetrically wide distribution pattern on seamounts and on the deep-sea floor in the Arctic Ocean, Atlantic Ocean, and the Mediterranean Sea (Kinorhyncha, Cyclorhagida)

Echinoderes pterus sp. n., Nomarski photomicrographs. The holotype male (BZMB 11608, collected at station 55, Mediterranean deep sea off Crete), non-type males (AZMB 11641, collected at station 717, Sedlo Seamount CZMB 11653, collected at station 152-1, Karasik Seamount), and a female (DZMB 11635, collected at station 1167.1, Mediterranean deep sea off Crete). A segments 7–9, dorsal view B segments 8–11, ventral view C segments 8–11, ventral view D segments 8–11, ventral view. Abbreviations: ltas, lateral terminal accessory spine; lts, lateral terminal spine; lvs, lateroventral acicular spine; mds, middorsal acicular spine; pe, penile spine; th, tuft of long hairs. Digits after abbreviations indicate the corresponding segment number. Black arrows point to sensory spots. Scale bars: 20 µm (A–C), 10 µm (D).