Complex sentence: The Silphidae adults feed in a saprophagous manner: they colonize the carrion during all four stages of decomposition, which are fresh, bloated, decay, and dry.
Split into simpler sentences: The Silphidae adults feed in a saprophagous manner, which means they feed on decaying matter. The beetles colonize the carrion during all four stages of decomposition, which are fresh, bloated, decay, and dry.