A NEW SPECIES OF ACANTHOLOCHUS (CYCLOPOIDA, BOMOLOCHIDAE) PARASITIC ON THE BARRED GRUNT CONODON NOBILIS (LINNAEUS, 1758) (OSTEICHTHYES, HAEMULIDAE) FROM RIO DE JANEIRO, BRAZIL.

A new species of Acantholochus Cressey, 1984 (Cyclopoida, Bomolochidae), parasitic on the gills and opercular cavity of the barred grunt Conodon nobilis (Linnaeus, 1758), from the coastal zone of the State of Rio de Janeiro, Brazil, is described and illustrated. The new species differs from its congeners through a combination of characters that includes presence of lamellae on the spines on the third segment of the exopods of the third leg, the number of antennule segments, and the presence of one seta on the second endopodal segment of the third leg. [ABSTRACT FROM AUTHOR]