''Rhodanassa io'' is a

moth Moths are a group of insects that includes all members of the order Lepidoptera that are not Butterfly, butterflies. They were previously classified as suborder Heterocera, but the group is Paraphyly, paraphyletic with respect to butterflies (s ...

of the family

Depressariidae Depressariidae is a family of moths. It was formerly treated as a subfamily of Gelechiidae, but is now recognised as a separate family, comprising about 2,300 species worldwide. Subfamilies Depressariidae consists of ten subfamilies: * Acriinae ...

and the only species in the genus ''Rhodanassa''. It is found in

French Guiana French Guiana, or Guyane in French, is an Overseas departments and regions of France, overseas department and region of France located on the northern coast of South America in the Guianas and the West Indies. Bordered by Suriname to the west ...

. The

wingspan The wingspan (or just span) of a bird or an airplane is the distance from one wingtip to the opposite wingtip. For example, the Boeing 777–200 has a wingspan of , and a wandering albatross (''Diomedea exulans'') caught in 1965 had a wingsp ...

is about . The forewings are glossy lilac-purple, the apical area beyond an undefined line from two-thirds of the costa to the tornus purplish-brown, the costa suffused with darker brown throughout. There is a grey-whitish quadrangular spot in the disc before the middle, a small oval black spot centred with brown-whitish and ringed with grey-whitish on the fold somewhat beyond this, and a rather large quadrangular black spot edged with grey-whitish and including a fine whitish line parallel to its posterior edge in the disc beyond the middle. There is a hardly perceptible faintly darker sinuate line from four-fifths of the costa to the tornus. The hindwings are bright deep rose. The forewings beneath have an elongate discal patch of light brassy-ochreous modified scales, extending over the upper part of the cell and above its margin from before the middle to the end, occupying about one-fourth of the width of the wing.Description of ''Rhodanassa callimnestra'' in Exot. Microlep. 1 (15): 480

References

Moths described in 1915 Stenomatinae {{Stenomatinae-stub