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Species Grammoptera haematites

flower longhorn? - Grammoptera haematites This beetle should be easy ... - Grammoptera haematites Longhorned Beetle - Grammoptera haematites Unknown beetle - Grammoptera haematites Grammoptera haematites Grammoptera haematites longhorned beetle - Grammoptera haematites longhorned beetle - Grammoptera haematites
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
Species haematites (Grammoptera haematites)
Explanation of Names
Grammoptera haematites (Newman 1841)
haemato - Greek 'blood'(1)
4-7 mm(2)
Typical form has dark elytra, orange pronotum and front femora. Yanega (2) notes "head is black except for the clypeus, and the basal antennal segments and legs are mostly reddish (scape reddish beneath)". That source also notes the pale hairs on elytra and pronotum.

The dark form (below) is often confused with G. subargentata (see comment here). The dark form appears to be more common in northern populations (2).
e. N. Amer. - Map (3)
Larvae feed on various shrubs(2)
Perhaps a Batesian mimic of Oedemeridae (False Blister Beetles), such as Asclera:
- - >
Oedemeridae are known to have strong chemical defenses, including cantharidin (4).
Internet References
Works Cited
1.Dictionary of Word Roots and Combining Forms
Donald J. Borror. 1960. Mayfield Publishing Company.
2.Field Guide to Northeastern Longhorned Beetles (Coleoptera: Cerambycidae)
Douglas Yanega. 1996. Illinois Natural History Survey.
3.Global Biodiversity Information Facility (GBIF)
4.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.