''Crambus nigrivarialis'' 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

Max Gaede Max Gaede (29 November 1871 – 27 October 1946) was a German engineer and entomologist of international fame who described several hundred of new species of Lepidoptera, mainly African Noctuidae The Noctuidae, commonly known as owlet moths, cu ...

in 1916. It is found in

Cameroon Cameroon, officially the Republic of Cameroon, is a country in Central Africa. It shares boundaries with Nigeria to the west and north, Chad to the northeast, the Central African Republic to the east, and Equatorial Guinea, Gabon, and the R ...

References

Crambini Moths described in 1916 Moths of Africa {{Crambini-stub