I'm hoping somebody can help me find out whats wrong with one of my tomato plants. I included pics below. But first a small explanation. I have 6 tomato plants. 2 beefsteak, 2 romas, on one side of my porch and 1 cherry and 1 roma cherry on the other side. They are all good but the roma cherry. None of the others are being affected. I am spraying it with a bug spray for tomato plants called "Seven" but it's not working. anyway here are the pics.
This first is a pic of a leaf being eaten and you can also see where some leaves have been eaten away almost completely
This one, the edges of the leaf are turning black and yellow.
and this one the edges are curling up.
The little green tomatos themselves have not been hurt so far, but Im afraid they will be next and that my other plants will become affected to.
Does anybody have any ideas at all what could be causing this? Thank you so much.