''Pycnarmon annulalis'' 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 ...

in the family

Crambidae Crambidae comprises the grass moth family of lepidopterans. They are variable in appearance, with the nominal subfamily Crambinae (grass moths) taking up closely folded postures on grass stems where they are inconspicuous, while other subfamilies ...

. It was described by

Paul Dognin Paul Dognin (10 May 1847 – 10 August 1931) was a French entomologist who specialised in the Lepidoptera of South America. Dognin named 101 new genera of moths.Peru Peru, officially the Republic of Peru, is a country in western South America. It is bordered in the north by Ecuador and Colombia, in the east by Brazil, in the southeast by Bolivia, in the south by Chile, and in the south and west by the Pac ...

References

Spilomelinae Moths described in 1906 Moths of South America {{Spilomelinae-stub