What is the common name for the fly that does not bite?

The house fly is the correct answer because it is commonly known for its presence in human environments and is recognized as a nuisance pest, primarily due to its tendency to invade homes and businesses. Unlike some other types of flies, such as the stable fly, which has biting mouthparts and feeds on the blood of animals, the house fly does not bite. Instead, it primarily feeds on decaying organic matter, which is why they are often associated with unsanitary conditions.

The house fly's mouthparts are adapted for sponging rather than piercing or sucking, making them incapable of biting. This characteristic distinguishes them from biting flies as well as others mentioned in the question. Understanding the behavior and feeding habits of the house fly is crucial for effective pest control strategies, especially in maintaining cleanliness and hygiene in residential and commercial settings.