What characteristic helps identify coffin flies?

Coffin flies, part of the family Phoridae, are often associated with decomposing matter, including human remains in forensic contexts. The characteristic that helps in identifying coffin flies is their tiny size and their unique ability to penetrate various materials such as blankets and plastic. This adaptation allows them to access decomposing tissues that are sometimes covered or concealed, making them significant in forensic investigations.

Their diminutive size enables them to fit into small crevices or through minuscule openings, which is crucial for finding decomposing bodies that may not be readily visible. This ability enhances their role in the decomposition process, as they can quickly locate and exploit suitable environments for laying their eggs. This is particularly important in forensic science, where understanding the behavior and lifecycle of these insects can provide insights into the time since death and conditions surrounding a crime.

The other characteristics mentioned do not pertain to coffin flies. Bright colors are generally not representative of these insects; instead, they tend to be brown or black. Similarly, coffin flies are not notably large compared to other fly species, and their reproductive cycles are not particularly lengthy, which makes those traits less useful for identification in forensic contexts.