I can't go downstairs and look at my stash of bay leaves from last year in the cupboard as I may wake the boys, which would be a fate worse tahn death (will look in the morning)but am sure mine might have brown bits, I just wash them and chuck them in.
Having said that our garden is home to many green and brown scale insects but they are much bigger than 5mm...hmmm my insect book is downstairs, will look in the morning also...sorry that wine has gone right to my mind! Must be time for sleep i think!