part of part of immediately preceded by immediately preceded by occurrent larval development phase 6-arm pluteus larva stage 8-arm pluteus larva stage Plut8a The larva is characterized by the presence on the ventral side of eight arms and by the development within the larva, on the left side of the stomach, of the adult rudiment. This stage is relatively long. It includes distinct changes occurring to the larva as well as within the larva, although the larva consistently exhibits 8 arms. UBERON:0008265 ecao_developmental_stage