Which flies are identified by a gray thorax with three distinct stripes?

The flies characterized by a gray thorax with three distinct stripes are indeed flesh flies. These flies belong to the family Sarcophagidae and are often recognized by their distinctive markings, which include a grayish body with the mentioned stripes along the thorax. These stripes are a key identifying feature that helps differentiate flesh flies from other similar species.

Flesh flies are of particular interest in various contexts, including forensic entomology, as they are often associated with decaying organic matter. Their larvae (maggots) feed on flesh and carrion, contributing to their name and ecological role. In contrast, the other options represent different species that do not share this specific coloration and stripe pattern, making them easy to distinguish from flesh flies based on those visual cues.