granted, this is my OU set, but i've been using this little guy with great success:
Galvantula @ Zap Plate/Life Orb/Expert/I suppose whatever item you want
Compoundeyes
4 HP/ 252 SpA/ 252 Spe
Modest/Timid (i personally use Modest, but Timid is nice for even more of a speedy bug friend)
Bug Buzz...