ARGULUS-PURPUREUS (RISSO, 1827), A JUNIOR SYNONYM OF ARGULUS-VITTATUS(RAFINESQUE-SCHMALTZ, 1814) (BRANCHIURA, ARGULOIDA)

The binomen Argulus purpureus (Risso, 1827) is a junior synonym of Arg ulus vittatus (Rafinesque-Schmaltz, 1814), and the generic name Dipros ia is a junior synonym of Argulus Muller, respectively, as first point ed out by Lipke B. Holthuis in 1954. Continued usage of Argulus purpur eus indicates that Argulus vittatus has been ignored. In addition, Arg ulus purpureus should be followed by ''(Risso, 1827)'' rather than ''R isso, 1816'' or ''Risso, 1827'' because the species was originally des cribed under the generic names, Binoculus Geoffroy St.-Hilaire, 1762 ( that was later suppressed) and Agenor Risso, 1827.