Review the item:
During the summer when a variety of fruit is in season,
Melville always avoids the fresh peaches, the fuzzy skin brushing
against his lips makes Melville think that he is eating a small rodent.
The comma between season and Melville is completely correct. When a variety of fruit is in season is a subordinate clause. It must be connected to a main clause. Melville always avoids the fresh peaches is the necessary main clause that completes the thought.