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For Insects, Spiders & Their Kin
For the United States & Canada
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Species Monochamus scutellatus - White-spotted Sawyer

longhorn - Monochamus scutellatus White-spotted Sawyer in Kouchibouguac National Park, New Brunswick - Monochamus scutellatus - female Whitespotted Sawyer  - Monochamus scutellatus White-spotted Sawyer - Monochamus scutellatus - male Lamiinae - Monochamus scutellatus White Spotted Sawyer, Monochamus scutellatus - Monochamus scutellatus Cerambycidae - Long-horned Beetles - Monochamus scutellatus Unknown flying beetle in sub-alpine meadow - Monochamus scutellatus
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Polyphaga
No Taxon (Series Cucujiformia)
Superfamily Chrysomeloidea (Longhorn and Leaf Beetles)
Family Cerambycidae (Longhorn Beetles)
Subfamily Lamiinae (Flat-faced Longhorn Beetles)
Tribe Monochamini
Genus Monochamus (Sawyers)
Species scutellatus (White-spotted Sawyer)
Other Common Names
Longicorne noir (French), Oil Sands Beetle, Tar Sands Beetle
Explanation of Names
Monochamus scutellatus (Say 1824)
Adults are 18-25mm(1)
scutellum contrasting white
much of Canada and n US, southward in Appalachians
Coniferous forests
Needles and tender bark of white pine, the favorite, but will attack red and jack pines, balsam, fir, white, black and red spruces, and larch(1)
Life Cycle
Two-year life cycle. Larvae excavates galleries in coniferous trees, often after they are damaged by a fire, storm, etc. Common hosts are: Balsam fir, spruces and white pine

Eggs are laid in slits or niches chewed in the bark, near scars or in wrinkled areas.(1)
The local (to Fort McMurray, Alberta, Canada) common names of Oil Sands Beetle and Tar Sands Beetle are due to the attraction of this insect to oil sands. Apparently the attraction is the scent of bitumen, chemically similar to compounds released by the diseased or damaged coniferous trees where they are attracted to lay their eggs.
See Also
Anoplophora glabripennis
Internet References
Works Cited
1.Eastern Forest Insects
Whiteford L. Baker. 1972. U.S. Department of Agriculture · Forest Service.
2.Field guide to common insect pests of urban trees in the Northeast
Hanson T., Walker E. 2002. Waterbury, VT: Department of Forests, Parks and Recreation. 35 pp.