Pokemon Black and White Pokedex - Sewaddle, Swadloon, Leavanny

Sewaddle
#046 Unova / #540 National
Type: Bug/Grass
Species classification: Sewing Pokemon
Abilities:
Swarm – Increases power of Bug-type moves by 1.5 if user has less than 1/3 HP remaining
Chlorophyll – Speed doubles during sunny weather
Dream World ability: Dust Proof – Doesn't take damage from weather
Location found (Black/White):Pinwheel Forest
Wild hold items: Mental Herb (rare)
Egg groups: Bug
Capture rate: 255
Gender ratio: 50/50
Effort values: 1 Defense
Evolution family:Sewaddle >Swadloonat level 20 >Leavannyvia Happiness

At first glance, the Sewaddle/Swadloon/Leavanny family looks like it mightbe a repeat of theCaterpie/Metapod/ButterfreeorWeedle/Kakuna/Beedrillfamilies, but there aren't that many similarities here. The only absolute must-have for Leavanny's moveset is X-Scissor, the notoriously powerful Bug-type move that takes advantage ofits excellent physical attack stat. For a Grass-type STAB, your best best is probably Razor Leaf.