Arrup akiyoshiensis sp. n., holotype (TS-20180330-01), A four leg-bearing segments, dorsal B four leg-bearing segments, ventral C left leg (pair 4), ventral D claw of right leg (pair 4), lateral E last leg-bearing and postpedal segments, dorsal F last leg-bearing and postpedal segments, ventral G right telopodite of last leg-bearing segment, dorsal H right telopodite of last leg-bearing segment, ventral. Scale bars: 300 µm (A–C); 100 µm (D); 500 µm (E–H).