2 PROPOSED SUBSPECIES IN GIRARDINUS-MICRODACTYLUS (PISCES, POECILIIDAE) FROM ISLA-DE-CUBA AND ISLA-DE-LA-JUVENTUD

Populations of Girardinus microdactylus from Isla de Cuba and Isla de la Juventud were reviewed and shown to represent two subspecies. The p opulation from Rio Taco-Taco, southwestern Isla de Cuba, represents th e nominate subspecies G. microdactylus microdactylus, whereas that fro m Isla de la Juventud represent the nominate subspecies G. microdactyl us rivasi. These two subspecies differ with respect to 11 morphometric al and 3 meristic characteristics in males, and in females 9 and 4 cha racters respectively. The morphometrical characters were significantly lower in specimens from Isla de Cuba, i.e. G. microdactylus microdact ylus, whereas the meristic characters were significantly higher in spe cimens from Isla de la Juventud, i.e. G. microdactylus rivasi.