False Powderpost Beetle

Characteristics

Most species are long and cylinder-shaped, with rasp-like teeth, and heads pointed downward; so not easy to see from above. (Under the microscope it looks like the beetle is protecting its head with armor.)

Where found

Around the world; about 60 species in the United States.

Habitat

Sapwood of both hardwood and softwood lumber, and products that are less than 10 years old, with a moisture content of 6-30% or more.

Food

Bostrichid larvae feed on wood cell contents, which is mainly starch, with some protein and sugar.

Biology

Female bostrichidae bore into wood, making tunnels across the grain of the wood before laying eggs in wood pores. After molting several times, a mature larva bores closer to the surface, makes a chamber, and pupates. The emerging adult bores to the surface and exits. Development from egg to adult usually takes 1 year. For some species that breed in partially-seasoned wood, it may take up to 5+ years in fast drying wood.

Damage

Lots. Structural damage to lumber and manufactured products.

Good riddance

Have a professional inspection to determine activity. If infestation is active, a licensed technician can control by:

• Localized pesticide application, surface or injection.

• Replacement of wood.

• Fumigation.