My mono bug team on White:
Volcarona/Hikari (A pain in the ass to get. but worth it) lv 65
Mild nature
Hidden power rock, Flamethrower, Bug buzz, and Wilowisp (To be replaced by Quiverdance)
Scolipede/Titan lv 62
Hasty nature
Megahorn, Earthquake, Poison Jab, and Swordsdance
Accelgor/ Jin lv 63
Docile nature
Bug Buzz, Recover, Sludgebomb, and Energy ball
Escavalier/ Lancer lv 61
Naughty nature
Iron Head, Megahorn, Poison Jab, and Return
Durant lv 59
Adamant (Yippe!)
Iron head, X-Siczors, Shadow Claw, and Stone Edge
Galvantula/ Spyder lv 63
Timid nature
Thunder, Bug Buzz, Energy Ball, and Thunder wave.
I plan to get new pokemon once I beat Cynthia. They are going to be a Heracross, a Siczor, and a Yanmega