Which species are typically associated with late-stage decomposition?

• A. House fly and cheese skipper
• B. Flesh flies
• C. Carrion beetles
• D. Blow flies

Answer: (C)

In forensic entomology, the sequence of insect arrival on a decomposing body moves from early colonizers to later scavengers as decomposition progresses. Carrion beetles are classic late-stage visitors because they specialize in decayed tissue and dry remains; they tend to appear once soft tissues are largely depleted and bones or remnants are exposed, feeding on whatever is left and helping break down the carcass further. Their presence is a strong indicator that the remains are in an advanced decay stage and may point to a longer postmortem interval than earlier-colonizing insects. In contrast, blow flies are among the first to arrive on fresh remains, flesh flies appear after initial flies, and other insects like house flies or cheese skippers are associated with earlier to mid or very dry stages, respectively. Therefore, the appearance of carrion beetles aligns best with late-stage decomposition.