''Leucargyra puralis'' is a

moth Moths are a paraphyletic group of insects that includes all members of the order Lepidoptera that are not butterflies, with moths making up the vast majority of the order. There are thought to be approximately 160,000 species of moth, many of w ...

in the family Crambidae. It was described by George Hampson in 1896. It is found in

Brazil Brazil ( pt, Brasil; ), officially the Federative Republic of Brazil (Portuguese: ), is the largest country in both South America and Latin America. At and with over 217 million people, Brazil is the world's fifth-largest country by area ...

. The

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

is about 60 mm. The forewings are silvery white. The larvae have been recorded feeding inside grasses.''Proceedings of the Zoological Society of London'' 1895: 960
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References

Moths described in 1896 Schoenobiinae Fauna of Brazil Moths of South America {{Schoenobiinae-stub