this is a representation of good and evil. the luscious ripe yellow pear tomato and their advisary the tobacco horned worm. it is like lady justice and her scales--showing opposites in balance. only in this case it would be the O'Melay garden Goddess of balance, exhibiting the circle of life.
this is a high resolution photo so you can zoom into the horned worm and see this menace up close as to recognize and hopefully illude it in the future.