Latest Pokemon GO information about Yanma Bug and Flying pokemon. Pokemon Go Generation 2: Bug Type Pokemon are countered by Rock Type. For Example, Shuckle (Rock type) will deal increased damage to Yanma when using any Rock Moves against him in Gym Battles.

Additionaly, since this Pokemon is also a Flying Type.

It will suffer increased damage from Electric Type Pokemon, such as Pichu or if damaged by any Electric Type Moves.

However, it will also take decreased damage when attacked by Grass, Psychic, Dark, Fighting and Bug moves.