Biology is the key to resolve this doubt.
Last week was quite busy for Pokémon, since, after months of rumors about some new Pokémon that would be very similar to others that we already know, we could see the presentation and announcement of Wiglett, a water-type Pokémon whose appearance and even Name they are very similar to Diglettthe mythical mole Pokémon that we could see in the first generation and that has been characterized for all these years by the meme that surrounds the mystery of its body.
Given this, it should be noted that although many people have claimed that it is a regional form of Diglett, it must be said that this data is wrongas Wiglett is a new Pokemon completely independent of the first-generation Earth type, and has, in fact, led many users to differentiate between regional shapes and convergent shapes. And it seems that there is a detail that is much more lapidary.
Wiglett cannot be the regional form of Diglett because it is not a mole
In a very simple way and making use of comparisons with other regional forms of the past, the Reddit user known as RJS_but_on_Reddit has demonstrated on this social network and in a very simple way why Wiglett is not a regional form of Diglettthis being something quite basic, since all regional forms have been characterized by belong to the same species on which they are based.
To put the examples mentioned by this user, Sandshrew from Kanto and Alola are pangolinsat the same time that all the Meowth that we have seen are cats and Wooper de Johto and Paldea are axolotls. In this way, Wiglett cannot be a regional form of Diglett because not a mole, but an eel:
A fairly simple method to end this debate. Otherwise, it only remains to mention that Pokémon Scarlet and Purple will be released on November 18 exclusively for Nintendo Switch, waiting to see what Pokémon these alternate versions see.