I found this little guy on my roses. Is he friend or foe?
It's not easy to see him because he is carrying so much on his back.
friend! It is a trashbug, and the back ornaments are the carcasses of his victims.
Oh wow! I lived in Florida for 18 years and never saw one of those (well never noticed one anyway)! I just Googled some more images, and that is one interesting little creature :)
As to friend or foe - definitely friend:
"Feeding habits: Larvae feed on aphids, thrips, mites, mealybugs, scale, whiteflies, eggs of leafhoppers, moths, cabbage loopers, corn earworms, Colorado potato beetles, asparagus beetles, leaf miners, and several other small caterpillars and beetle larvae. Developing larvae eat from 100 to 600 aphids a day.
Economic importance: Control of many troublesome insects. One of our most important beneficial insects.
Boy, I'm sure glad I didn't squish him!