yup an aphid i hate them little suckers!!! no pun intended
the ones good one is a dead ones
had red ones this year on my tomato's !!
killed them with dawn dish soap and water and a little peroxide in a sprayer, they didnt show up again until about two weeks ago, i suppose its because the lady bugs and lace wings are done for the year, oh well winter coming and there gonna soon be out of luck
you can also use pyrethrin or permethrin they work good too and kills alot of other pest too
plant dill,yarrow,mint any or all they attract lady bug,lacewings and other predatory insects that love to eat aphids
hope this helps
thanks joe