A new species of Exogone (Syllidae: Exogoninae) from off the state of São Paulo (South-East Brazil)

Abstract

We describe a new species of Exogone Örsted, 1845 (Syllidae: Exogoninae) found in dense populations in some areas off the State of São Paulo (south-east Brazil). Exogone cebimar sp. nov. has an enlarged median antenna, dorsal cirri present on all chaetigers, a triangular process on each of the shafts of spiniger-like chaetae of segments 1 and 2, and a short proventricle, extending for two segments only. This new species is one of the subjects of ongoing studies dealing with the characterisation of brooding methods found in the subfamily Exogoninae.