Numbers
One of 12 Nearctic species in the genus.
Identification
Black with fine granulate surface on the elytra. Also on the elytra is golden pubescence. Each elytron has 3-4 ridges, some rather faint. Front of pronotum "regularly rounded" rather than elliptical; pronotum has characteristic markings visible in the BugGuide photos of this species.
(1)
Size is a key component of identification, since in the northeast, anyway, E. corrusca is the largest species at 10-14 mm, while other species are 5-7.5 mm.
The U. Alberta entomology website notes: "Because of variations across its range, the most recent information describes E. corrusca as a species complex, quite possibly consisting of several species but not sufficiently studied or understood to differentiate between them."
Range
Downie and Arnett list this species from eastern Canada and also from British Columbia. In the United States it ranges from Maine to Maryland and Wisconsin. The species is found in Colorado, Arizona, and the Pacific coast states as well.
(1)Habitat
Most commonly found on or under bark, also on flowers.
Remarks
"Sometimes a pest in sap buckets in the Spring."
(1)
