There are currently a total of 2 Pokémon in the Diglett (Forma de Alola) family. Diglett (Forma de Alola) evolves into Dugtrio (Forma de Alola) which costs 50 Candy.
There is a very low chance that you can get a shiny Diglett - Forma de Alola, which has the following appearance:
Acerca
"En la mayoría de las granjas se suelen criar Diglett por la sencilla razón de que, excaven donde excaven, dejan la tierra perfectamente labrada para sembrar. El terreno queda listo para plantar ricas verduras."