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TaxonomyBrowse
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Genus Grammoptera

Small Black Longhorn - Grammoptera subargentata longhorn beetle - Grammoptera militaris longhorn beetle - Grammoptera militaris Black Longhorn - Grammoptera subargentata Black cerambycid? on mountain maple - Grammoptera subargentata Pedilus elegans - Grammoptera haematites  Cortodera ? - Grammoptera  Cortodera ? - Grammoptera
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Polyphaga (Water, Rove, Scarab, Long-horned, Leaf and Snout Beetles)
No Taxon (Series Cucujiformia)
Superfamily Chrysomeloidea (Long-horned and Leaf Beetles)
Family Cerambycidae (Long-horned Beetles)
Subfamily Lepturinae (Flower Longhorns)
Tribe Lepturini
Genus Grammoptera
Explanation of Names
Grammoptera Audinet-Serville 1835
Numbers
6 spp. in the New World, all in the nominate subgenus and all in our area(1), ~20 more spp. in the Palaearctic
Range
widespread in boreal and montane habitats(2)
Remarks
Doug Yanega on distinguishing C. subargentata from the dark form of C. haematites: The dark form of haematites is a fairly common and universally overlooked morph found across n. NA: in Canada, the upper tier of the US, and at very high altitudes elsewhere. Once I learned to ignore the pronotal color, and look at the hairs on the pronotum and elytra instead (dark in subargentata, pale in haematites), everything became easier. Specimens of subargentata with very definitely dark elytral hairs occur all the way across, so I don't think there's a geographic variant of subargentata that has pale elytral hairs. I think there are a lot of misidentified haematites specimens sitting in collections. (pers. comm. to =v= 31.v.2012)
Works Cited
1.A Photographic Catalog of the Cerambycidae of the New World
2.American Beetles, Volume II: Polyphaga: Scarabaeoidea through Curculionoidea
Arnett, R.H., Jr., M. C. Thomas, P. E. Skelley and J. H. Frank. (eds.). 2002. CRC Press LLC, Boca Raton, FL.