Abstract
Tanaidacea is a megadiverse group, congregating 25 families, 200 genus and more then 900 species around mundial ocean, divided in 3 suborders: Apseudomorpha, Neotanaidomorpha e Tanaidomorpha. The group is one of most important component on soft bottom macrofauna. Apseudomorpha are common on deep sea samples that, without taxonomic identification, remain compromising environmental monitori…