The long-legged crickets (Orthoptera, Grylloidea, Phalangopsidae Blanchard, 1845) collected during the 'Our Planet Reviewed' expedition of the Muséum national d'Histoire naturelle, Paris, and Pro-Natura International in 2015 in the Mitaraka region (Tumuc-Humac mountains, French Guiana) are studied. Among the 105 specimens, all collected by sight, 21 species (14 genera) have been identified. They include two new genera and eight new species, all described here: Aracopsis hugeli Desutter-Grandcolas, n. gen., n. sp., which calling song is described, close to Phalangopsis Serville, 1831 and