Nervia wallengrenii, also known as Wallengren's ranger or Wallengren's skipper, is a species of butterfly in the family Hesperiidae.

[3] It is found in South Africa (KwaZulu-Natal, Transvaal), Zimbabwe and from Mozambique to Kenya.

[4] The wingspan is 27–31 mm for males and 30-35 for females.

Adults are on wing from August to November and from February to April.

[5] The larvae probably feed on Imperata cylindrica.