Although there are six species of Catenicellidae recorded in Brazil, the three Catenicella species described here are the first mention of the genus in the state of Rio de Janeiro, enlarging their distribution along the Brazilian coast. Previously, C. contei was recorded in Pernambuco and São Paulo, while C. elegans was recorded in the states of Alagoas and São Paulo. The recent identification of these species in the state of Rio de Janeiro suggests two possibilities: it is difficult to find them due to small size and cryptic habitat, and/or they represent introduced species.
Ramalho, L. V., Taylor, P. D., & Muricy, G. (2014). New records of Catenicella de Blainville, 1830 (Catenicellidae: Cheilostomata: Ascophora) in Rio de Janeiro State, Brazil. Check List, 10(1), 170. https://doi.org/10.15560/10.1.170