Gothorita isn't in Pokemon White. It is only available through Pokemon Black. So you must trade for it.
Gothita, Gothorita, Gothitelle, and Reshiram. That's all that are not in Pokemon Black as far as I know of.
Gothita evolves into Gothorita at level 32 and Gothitelle at 41.
Gothorita is #575 in the national pokedex, and it is a Psychic type Pokemon.
You can't catch a Gothorita but sometimes on route 5 you can find a gothita
lvl 41
level 41(:
Gothorita can be evolved from Gothita at Lv. 32. You'll find Gothita at Route 5
Gothita is a Psychic type pokemon.
The Pokemon exclusive to the Black version are: Weedle Kakuna Beedrill Murkrow Houndour Houndoom Shroomish Breloom Plusle Volbeat Hounchrow Cottonee Whimsicott Gothita Gothorita Gothitelle Vullaby Mandibuzz Tornadus Reshiram
In Pokémon White 2, a wild Gothorita cannot be found and its pre-evolution cannot be found as wild Pokémon in White 2 either so in order to get Gothorita or its evolutions, you will need to find someone that can arrange a trade with you so that they can trade you Gothorita or its pre-evolution which is known as Gothita.
Gothita evolves into Gothorita at level 32. Gothorita evolves into Gothitelle at level 41.
weedle, kakuna, beedrill, murkrow, houndour, houndoom, shroomish, breloom, plusle, volbeat, honchkrow, cottonee, whimsicott, gothita, gothorita, gothitelle, vullaby, mandibuzz, tornadus and (of course) reshiram.