Anthaxia quercata

Metallic Wood-boring Beetle
Anthaxia quercata

Metallic Wood-Borer Beetle Anthaxia quercata on Hoptree leaf. July 03, 2009 Wheatley, Ontario.
Metallic Wood-Borer Beetle Anthaxia quercata on Hoptree leaf. July 03, 2009 Wheatley, Ontario.

Identification:
Head: Male head entirely light metallic green. Female head is blue-green to purple with bronze or yellowish-green highlights.
Antenna: Antennae bluish to greenish.
Thorax (Pronotum): Light metallic green, base margin very slightly curved inward at each side. Lower margin straight across. Center slightly elevated, may have visible line sometimes. Sides slope slightly from center, with a deeper indented area near outside edge of lower margin. Large bronze-colored area down center to lower margin, but does not touch base margin on the male. Female thorax bronze with lighter areas in each corner of lower margin.

Metallic Wood-Borer Beetle Anthaxia quercata on Hoptree leaf. July 03, 2009 Wheatley, Ontario.
Metallic Wood-Borer Beetle Anthaxia quercata on Hoptree leaf. July 03, 2009 Wheatley, Ontario.

Wings (Elytra): Male is light metallic green; darker down each side and down middle, usually more than half way. Female is more bronze with some green at base half, down middle. Wing side edges slightly wavy and taper to tip; tips rounded. Underside dark with some short hair.
Legs: Darker metallic green to blue-black. Tarsal claws with tooth at base.
Abdomen: Dark, tip rounded, barely visible under wings.

Size: 4 to 5.5 mm.

Habitat: Forests and forest edges.

Food: Adults feed on flower pollen and nectar.

Flight Time: April to July

Metallic Wood-Borer Beetle Anthaxia quercata on Bittersweet leaf. July 09, 2014 Wheatley, Ontario.
Metallic Wood-Borer Beetle Anthaxia quercata on Bittersweet leaf. July 09, 2014 Wheatley, Ontario.

Life Cycle: Larvae live in twigs and branches of Pine trees per MacRae, 2007. Although Oak and other hardwood trees have been reported, the insect may have been misidentified.

Comments: Toronto per BugGuide. Wheatley – photos July 2009 and July 2014.

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

Leave a Reply