Pheromosa

Pheromosa is is a species of Pokémon in the series of the same name. It is a Bug / Fighting Pokémon introduced in the seventh generation exclusive to Pokémon Moon. It is an Ultra Beast with the code name as UB-02 Beauty.

Main Pokémon games
Pheromosa is the second Ultra Beast encountered in Moon. It appears in a cutscene fighting Tapu Koko and Hala after Lusamine opens the holes to the Ultra Beast dimension. In the post-game Ultra Beast quest in Moon, Pheromosa is the second Ultra Beast that has to be hunted down. It's on Melemele Island.