mmmhm... it is Gasponia fascicularis (Fairmaire, 1887), like this specimen.
The specimen figured by Teocchi et alii in the Cahiers Magellanes 107 is G. fascicularis as well, though mentioned as G. gaujani (sic!) In fact, the paper tells about a new record of G. fascicularis and the image has a wrong label.
Then, the author beats around the bush about the differences between G. fascicularis and G. gaurani, forgetting the simple fact that G. fascicularis has antennae black and G. gauranired...