Mollusca, Bivalvia, Mytilidae, Myoforceps aristatus (Dillwyn, 1817): Distribution and new record localities at Ilha Grande Bay, Brazil

In many intertidal rocky shores at Ilha Grande Bay, state of Rio de Janeiro, Brazil, the vermetid gastropodPetaloconchus varians is the dominant organism, forming a well-developed and complex structure, where different groupsof organisms live, including the invasive bivalve Myoforceps aristatus. The present paper describes the distribution and newrecord localities of M. aristatus at Ilha Grande Bay.