Morphological observations and emended description of Amphora micrometrafrom the Bolivian Altiplano, South America

A population of Amphora micrometraGiffen, collected in September 2002 from different habitats in Laguna Blanca in the Bolivian Altiplano, South America, has been examined using light transmission and scanning electron microscopy. The original description of this species is incomplete and insufficient to characterize the taxon in the light of the newly collected ultrastructural data. The holotype of A. micrometrawas examined during the present study and compared to Bolivian specimens. An emended diagnosis of A. micrometrausing all available information is provided. A taxonomic discussion based on available literature and the ecology of the taxon is also presented herein.