Varied Carpet Beetle
The varied carpet beetle can be identified by irregular striations of brown, yellow, and white across their backs, which is where the name “carpet beetle” comes from.
Powderpost beetles can be identified by their long, narrow, and flat reddish-brown bodies. Measuring ⅛ to ¼ of an inch in length, their flat bodies are well suited to burrow into a variety of wooden materials.
Merchant Grain Beetle
Oryzaephilus mercator (Anobiid and Lyctus species)
Merchant grain beetles are generally 1/10” long, although they can sometimes grow larger. They have brown bodies, two antennas, six legs, and they’re narrow and oval shaped.