First record of the subfamily Proctolabinae (Orthoptera: Acridoidea: Acrididae) from Argentina

this contribution records for the first time the subfamily proctolabinae from argentina. this subfamily contains 29 genera and 209 species restricted to the neotropics with only one genus, eucephalacris descamps, reaching south as far as mato grosso in brazil and northern paraguay. specimens belonging to eucephalacris borellii (giglio-tos) were collected in misiones province. the presence of this species registered herein raises to eleven the number of acrididae subfamilies known to occur in the country, and highlights the importance of conducting surveys of acridoidea and orthoptera in general, in diverse regions of argentina. brief diagnoses and illustrations of the characters that allowed the identification of the genus and species are also given in this contribution.