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 .
Scientific Name: Dicera spp.
Size (Adult; Length): 9mm to 26mm (0.35in to 1.01in)
Colors: gold, brown, green
Descriptors: metallic, bronze, copper, gold, shiny, luster, speckled, flattened, smashed head, flying, tree pest
Note: An insect's reach is not limited by lines drawn on a map and therefore species may appear in areas, regions and/or states beyond those listed above as they are driven by environmental factors (such as climate change), available food supplies and mating patterns. Grayed-out selections indicate that the subject in question has not been reported in that particular territory. U.S. states and Canadian provinces / territories are clickable to their respective bug listings.
Antennae: Beetles have a pair of antennae on the head used as sensors.
Head: The head is home to the insect's eyes, antennae, and mandibles (jaws).
Thorax: Holds the three pairs of legs as well as vital internal organs.
Elytron: One of two wing cases on a Beetle that protects its wings (plural: elytra).
Wings: Appendages used for flying and kept under the elytra until needed.
Abdomen: Houses organs related to circulation, reproduction, and excretion.
Legs: Beetles have three pairs of legs located at the thorax, numbering six legs in all.