Svistella Gorochov, 1987. In Medvedev, L.N. [Ed.]. Entomofauna of Vietnam. Nauka, Moscow: 13; Otte, 1994. Orthoptera Species File 1: 47.
Type species: Paratrigonidium bifasciatum Shiraki, 1913
Body small. Eyes vertically lengthened. Fifth joint of maxillary palpi long, triangular. Anterior margin of pronotum straight or a litter convex. Male tegmina membranaceous, extending to apex of abdomen, presenting a large mirror contains false mirror; tegmina of female feebly convex, with regular veins. Anterior tibiae with tympanum; posterior tibiae with three pairs of dorsal spurs and five apical spurs, two internal apical spurs longer. Genitalia of male with long apical branches. Ovipositor short and curved, with apical valve occupying half the total length, finely denticulate.