A species of the
Lutzomyia oswaldoi
group is recorded from the Valcheta stream basin, Somuncura plateau, Patagonia.
It represents the World southermost record of a species of Phlebotominae,
apparently supporting the hypothesis about the relictual character of several
components of the Somuncura plateau biota, particularly for those species
belonging to the Paranaense lineages.
