Which of the following affects tomatoes specifically?

The redshouldered stink bug is known to specifically affect tomatoes, making it the correct choice. This pest can cause significant damage to tomato plants by feeding on the fruit and foliage, leading to issues such as stunted growth, mutilated fruit, and reduced yields. Understanding the specific interactions between this pest and tomatoes helps in managing and implementing effective control strategies for maintaining healthy crops.

In contrast, while the other pests mentioned may affect various plants, they are not as closely associated with tomatoes as the redshouldered stink bug. By focusing on the characteristics and feeding behaviors of pests, it becomes clear why the redshouldered stink bug is particularly relevant to tomato growers.