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Keywords:

  • Andean region;
  • distribution;
  • habits;
  • mountain streams;
  • new species;
  • Oxytelinae;
  • Thinobius

Abstract

Thinobius andinus sp. nov. from Argentina is described and illustrated, detailed information on its ecology is provided and a key to species of Thinobius from south-western South America is given. This species was collected from high elevation stream areas of the Mendoza River watershed. It belongs to pollution-sensitive species, and it was mainly found in clear, low-salinity cold waters pertaining to high elevation streams with riparian vegetation. Lectotype is designated for Thinobius pulchripennis Bernhauer, 1923.