BOECKELLA-DIAMANTINA N-SP (CALANOIDA, CENTROPAGIDAE), FROM A HIGH ANDEAN LAKE IN MENDOZA, ARGENTINA

A new species of Boeckella from limnetic samples of Laguna del Diamant e, a high lake in the Andes (34-degrees-10' S) is described and illust rated. The species is defined by the characters of the male fifth leg: the right two segmented endopod bears four peculiar, short, claw-like spines, the left endopod is a simple finger-like projection. This spe cies is related to B. gibbosa, also a species from the Andes and B. va llentini from Malvinas (Falkland Islands) and other subantarctic islan ds. It is distinguished from them by diagnostic features of the fifth legs of the male and abdominal structure and fifth legs of the female. Some current views on the features used in the taxonomy of the genus Boeckella are discussed.