Dorothy Dandridge IS Melmendi, Queen of the Ashuba!

In her only genre role, Dorothy Dandridge played Melmendi, Queen of the Ashuba in 1951's Tarzan's Peril.

An original story, not based on any of Edgar Rice Burroughs' stories, the film was the third of five movies starring Lex Barker as Tarzan and directed by Byron Haskin, who went on to A-list genre films like 1953's War of the Worlds.
It was also the first Tarzan film to have scenes shot on location in Africa.
(Previous films used existing stock footage from other movies.)

One of the scenes from the film is recreated in the biopic Introducing Dorothy Dandridge starring Fantastic Femme Halle Berry as Dorothy playing Melmendi.
Here's a comparison between a scene in the original film and the biopic's version of it.
Melmendi, nor her tribe, the Ashuba, have appeared in any Tarzan story (in any media) since...

BTW, Tarzan's Peril is airing Saturday, July 16th, at 12:00pm (EST) on Turner Classic Movies!

Set your DVRs!