Metallic Wood-boring Beetle
Identification: Colour ranges anywhere from all brown-black to partly green with copper reflections.
Head: Dark, coppery brown-black to partly green. Black line down middle of head. Long pale hair.
Antenna: Base (scape) and pedicel bronze. Segments all dark metallic; serrated.
Thorax (Pronotum): Dark coppery brown-black to partly green. Wide indent or groove down middle (sulcate). Covered with pale hair. Sides uneven; slightly bell-shaped when viewed from top.
Wings (Elytra): Dull brown-black, with bronze and/or green reflections. Wider than thorax (pronotum) to mid wing, then tapering to long tips. 4 dark, shiny, much raised ridges down wings, middle two shorter, not reaching wing tip. Tips can be pointed or squared off. Center base of wings (scutellum) has oblong spot. The usual V-shaped marks below scutellum are replaced with 2 straight ridges, close together; sometimes faint or absent.
Legs: Brown-black, metallic. Male front tibia simple.
Abdomen: Dark coppery brown-black to partly green. The tip of the abdomen is wide, rounded in both male and female. Underside purplish coppery, with fine pile; no spots.
Buprestis aurulenta has only 3 ridges on wings all reaching to tip; short, V-shaped lines below scutellum barely visible; B. sulcicollis has 4 ridges and short, straight lines below scutellum.
Buprestis striata has 4 ridges on wings, not as highly raised as B. sulcicollis; middle two ridges are much longer, reaching tip on B. striata; short V-shaped lines below scutellum, not straight lines like B. sulcicollis.
Size: 13 to 15.5 mm.
Habitat: Northern conifer forests.
Food: Adult food unknown.
Flight Time: Late May to mid-August
Life Cycle: Larvae have been recorded from Pitch Pine (Pinus rigida) and Eastern White Pine (P. strobus). Rest of life cycle unknown.
Comments: Rare. Georgian Bay area east to Algonquin Provincial Park, north to Timmins has 6 records, 1961, 1962, 1973, 1975, 1989. Bruce Peninsula National Park, May 28, 2012.
For information on synonyms, references and type specimens see next page