It is some type of insect. I do not use insectisides unless you know what you are dealing with. And if you do want to spray, try a good orgainic type. Just remember, even with an orgainic spray you can still kill the good bugs (bees).

I use to spray for insects but I have found that I rather have ladybugs and bees in my yard, even if it means having some chewes leaves and buds.