Genus Purana Distant, 1905

Purana Distant, 1905a: 60 . Type species: Dundubia tigrina Walker, 1850 (Malabar) .

Formosemia Matsumura, 1917: 193 . Type species: Leptopsaltria apicalis Matsumura, 1907 (Formosa) .

Diagnosis. Head including eyes as wide as mesonotum and as long as space between eyes; postclypeus prominent and convex, its base almost at right angles to anterior lateral angles of vertex; pronotum narrowed anteriorly, its lateral margins angulated or toothed; mesonotum much longer than pronotum; male abdomen moderately conical above, gradually attenuated posteriorly, longer than space between apex of head and base of cruciform elevation; tubercles on sternites 3 and 4 large and prominent; male opercula broader at base than long; rostrum reaching or a little passing posterior coxae; fore and hind wings hyaline.