Despite that the document says there's a 4% chance to encounter a Larvesta on floor b1f, there are no Larversta to be found :frown:. I did encounter plenty of Onix (5%) and Litwick (5%)...
Guess I'll use Pokegen to make one myself... I already used Pokegen to give Scrafty 'Drain Punch' which it could otherwise get through breeding -but who has the patience for that...