View Image Gallery of Tribe Sypnini.

Sypna Guenée

Type species: omicronigera Guenée, India.

Species of Sypna have the paler forewing fasciation more irregular and more distinctly multiple than in other genera; the dark submarginal has its more anterior two or three components more definitely enlarged. The medial band often stands out darker. Pale mauve, blue or white highlighting of fasciae or broader areas can be frequent and is often variable within a species.

The male abdomen has the eighth segment reduced to a narrow ring, the sternite and tergite about three times as wide as long; the tergite has widely separated, short apodemes. The valves are characterised by a somewhat falcate apex and a costa that is strongly convex over its basal half, extending as a flange into the falcate area. The interior flap, when it occurs, is relatively distal.

The female (
martina Felder) has the seventh sternite strongly reduced. Though the ostium falls within the seventh segment, it opens within a rectangular structure running anteriorly from the eighth segment. The ductus is short, sclerotised; the bursa is elongate.

The genus is more diverse in the Oriental tropics to Sundaland but attenuates eastwards, with only a few species in the Moluccas, and New Guinea, one extending to northern Australia.

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