Garden Pests and Diseases: Hardy Hibiscus getting demolished, 0 by tifdotcom

tifdotcom wrote:
Hi all,
I have something feasting on my hardy hibiscus and I want to know what it is so I can control it. When I looked at the plant, there was a small green inchworm-looking worm on the underside of one of the leaves (couldn't take a pic 'cause it was too small for my cell phone to focus on). There are also lots of flying insects with black bodies and red heads (took a cell phone pic of one but it's out of focus) all over it. I don't know which is doing the damage (probably the inchworm thingie).
Here's a pic of the damage.
Thank you!!!
PS - I'm in Stony Point, NY - zone 6 - 30 miles north of Manhattan