Chalcophora fortis

Metallic Wood-boring Beetle
Chalcophora fortis

 

Metallic Wood-boring Beetle Chalcophora fortis on towel, June 29, 2006. Robinson Island, Beaverstone Bay, near Killarney Provinical Park.
Metallic Wood-boring Beetle Chalcophora fortis on towel, June 29, 2006. Robinson Island, Beaverstone Bay, near Killarney Provinical Park.

Identification:
Head: Metallic gray-greenish to light or dark coppery.  Upper face slanted to top of head, sometimes with a dark line down center. Some white hair on face.
Antenna: Base (scape) and pedicel greenish-copper. Segments metallic blackish, slightly hairy.
Thorax (Pronotum): Metallic gray-greenish to light or dark coppery.  Wide, dark stripe down middle. Base margin curves outward, wrapping around sides of head, pointed corner. Lower margin wavy, sides pointed with a black mark 1/3 inward from each side. Above black marks, thorax has indented or concave area. Side edges slightly wavy with fringe of hairs below.
Wings (Elytra): Metallic gray-greenish to light or dark coppery. Side margins slightly wavy. Wings taper to tip. Tips squared to slightly rounded.  4 raised ridges: 1st one closest to middle is thicker at base and continues to wing tip. 2nd one is broken into 3 sections and attaches to the 1st ridge before wing tip. 3rd one is short, reaching just past mid wing. 4th or outer one reaches wing tip. Center of base (scutellum) absent, but 2 thick dark lines (can appear as a narrow V-shape) is present.
Legs: Metallic gray-greenish to light or dark coppery. Thighs (femora) thick. Shins (tibiae) much thinner. Front shin widened at tip.
Abdomen: Darker with dark pile. Tip rounded on both male and female. Male has V-shaped notch on underside. female does not.

Similar Species: Chalcophora liberta is much smaller 15 to 22 mm long, and usually much lighter in colour.

Size: 26 to 33 mm. Very large.

Habitat: Conifer forests.

Food: Adults recorded feeding on flowering pine buds.

Flight Time: Late-May to early September.

Life Cycle: Stressed or dying Eastern White Pine (Pinus strobus) and Scotch Pine (P. sylvestris), logs and stumps. Nothing else known about life cycle.

Comments: Northern Ontario, Georgian Bay area.

For information on synonyms, references and type specimens see next page

Leave a Reply