'Billy the Exterminator' Star -- Busted for Roaches

One of the stars of "Billy the Exterminator" was the one buggin' out this weekend -- when cops in Louisiana busted the guy for felony marijuana possession.

TMZ has learned Ricky Lee Bretherton -- one of the bug fighters on the A&E reality show -- was arrested on April 10 when a routine traffic stop turned into a big, green drug bust.

According to Leesville PD, officers approached Bretherton's car and located a "quantity of suspected marijuana as well as a container that had more suspected marijuana as well as drug paraphernalia."

Bretherton and a female passenger were each arrested. Bretherton was charged with felony weed possession, felony drug paraphernalia possession and a traffic charge.