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Genus Grammoptera

Flower longhorn - Grammoptera subargentata Grammoptera subargentata Beetle - Grammoptera subargentata unknown longhorn - Grammoptera subargentata Hurricane Creek longhorn - Grammoptera Grammoptera sp?  - Grammoptera rhodopus Taneum-4 - Grammoptera beetle - Grammoptera subargentata
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 Lepturinae (Flower Longhorn Beetles)
Tribe Lepturini
Genus Grammoptera
Explanation of Names
Grammoptera Audinet-Serville 1835
6 spp. in the New World, all in the nominate subgenus and all in our area(1), ~20 more spp. in the Palaearctic
widespread in boreal and montane habitats(2)
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.New World Cerambycidae Catalog
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.