It is the first volume of the new scientific publication of the World Biodiversity Association “Memoirs on Biodiversity”: 14 genera, 2 subgenera, 285 species and 3 subspecies, all new to Science, described by 28 taxonomists in 19 scientific papers, represent the first contribution of the World Biodiversity Association to the knowledge of the biodiversity of South America.

*Authors: Allegro Gianni, Ballerio Alberto, Bartolozzi Luca, Battiston Roberto, Bellò Cesare, Boano Giovanni, Buzzetti Filippo Maria, Carotti Giovanni, Casale Achille, Constantin Robert, Daccordi Mauro, Silvano Fabrizio, Giachino Pier Mauro, Gill Bruce D., Janni Ottavio, Moret Pierre, Onore Giovanni, Osella Giuseppe, Pace Roberto, Pavia Marco, Picciau Luca, Proaño Castro Carolina, Rigato Fabrizio, Rossi Walter, Salgado José Maria, Scupola Antonio, Toledano Luca, Vigna Taglianti Augusto.