Which of the following flies is often referred to as humpbacked or coffin flies?

The phorid fly is commonly referred to as a humpbacked or coffin fly due to its distinctive appearance and behavioral characteristics. These flies have a rounded body that appears humped, which is a defining feature. They are often found in decaying organic matter, including dead animals, which aligns with the term "coffin fly," as they can be associated with decomposing corpses.

Phorid flies are particularly known for their role in forensic entomology, as their presence can aid in determining the time of death in investigations. Their habits and environments contribute to their common names, which reflect both their physical traits and their ecological niche. It’s important for pest control professionals to recognize phorid flies, as their presence can indicate unsanitary conditions and the potential for other pest-related issues.