Flatheaded Hardwood Borer (Dicera spp.)
Detailing the physical features, habits, territorial reach and other identifying qualities of the Flatheaded Hardwood Borer.
Updated: 6/19/2018; Authored By Staff Writer; Content ©www.InsectIdentification.org
The metallic sheen on Flatheaded Hardwood Borer Beetles encourages a closer look of this squat forest-dweller.
Flatheaded Hardwood Borers are everything their name suggests. The head has a low profile with the eyes on each side. The beetle's larvae feed on the inside of hardwood tree trunks, leaving behind tunnels etched in the outer cambium, just under the bark. These small worm-like larvae dig into the wood, leaving behind a pile of frass (feces) on the outside of the trunk that looks a lot like sawdust. Most species of this genus are not significant threats or pests to the tree populations they inhabit.
Adults are dark with a metallic sheen all over. Some species have green patches, others are highly speckled. All members of Dicera have a tapered abdomen that comes to a tip. The elytra (wing coverings) do not fully connect at the tip, so the insect may appear to have two short 'tails'. Look for them in deciduous, evergreen and mixed hardwood forests .